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--- a/node_modules/engine.io-parser/LICENSE
+++ b/node_modules/engine.io-parser/LICENSE
@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2016 Guillermo Rauch (@rauchg)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- a/node_modules/engine.io-parser/Readme.md
+++ b/node_modules/engine.io-parser/Readme.md
@ -0,0 +1,202 @@
+
+# engine.io-parser
+
+[![Build Status](https://secure.travis-ci.org/socketio/engine.io-parser.svg)](http://travis-ci.org/socketio/engine.io-parser)
+[![NPM version](https://badge.fury.io/js/engine.io-parser.svg)](http://badge.fury.io/js/engine.io-parser)
+
+This is the JavaScript parser for the engine.io protocol encoding,
+shared by both
+[engine.io-client](https://github.com/socketio/engine.io-client) and
+[engine.io](https://github.com/socketio/engine.io).
+
+## How to use
+
+### Standalone
+
+The parser can encode/decode packets, payloads, and payloads as binary
+with the following methods: `encodePacket`, `decodePacket`, `encodePayload`,
+`decodePayload`, `encodePayloadAsBinary`, `decodePayloadAsBinary`.
+
+The browser-side parser also includes `encodePayloadAsArrayBuffer` and `encodePayloadAsBlob`.
+
+Example:
+
+```js
+var parser = require('engine.io-parser');
+
+var data = new Buffer(5);
+for (var i = 0; i < data.length; i++) { data[i] = i; }
+
+parser.encodePacket({ type: 'message', data: data }, function(encoded) {
+  var decodedData = parser.decodePacket(encoded); // { type: 'message', data: data }
+});
+```
+
+### With browserify
+
+Engine.IO Parser is a commonjs module, which means you can include it by using
+`require` on the browser and package using [browserify](http://browserify.org/):
+
+1. install the parser package
+
+    ```shell
+    npm install engine.io-parser
+    ```
+
+1. write your app code
+
+    ```js
+    var parser = require('engine.io-parser');
+
+    var testBuffer = new Int8Array(10);
+    for (var i = 0; i < testBuffer.length; i++) testBuffer[i] = i;
+
+    var packets = [{ type: 'message', data: testBuffer.buffer }, { type: 'message', data: 'hello' }];
+
+    parser.encodePayload(packets, function(encoded) {
+      parser.decodePayload(encoded,
+        function(packet, index, total) {
+          var isLast = index + 1 == total;
+          if (!isLast) {
+            var buffer = new Int8Array(packet.data); // testBuffer
+          } else {
+            var message = packet.data; // 'hello'
+          }
+        });
+    });
+    ```
+
+1. build your app bundle
+
+    ```bash
+    $ browserify app.js > bundle.js
+    ```
+
+1. include on your page
+
+    ```html
+    <script src="/path/to/bundle.js"></script>
+    ```
+
+## Features
+
+- Runs on browser and node.js seamlessly
+- Runs inside HTML5 WebWorker
+- Can encode and decode packets
+  - Encodes from/to ArrayBuffer or Blob when in browser, and Buffer or ArrayBuffer in Node
+
+## API
+
+Note: `cb(type)` means the type is a callback function that contains a parameter of type `type` when called.
+
+### Node
+
+- `encodePacket`
+    - Encodes a packet.
+    - **Parameters**
+      - `Object`: the packet to encode, has `type` and `data`.
+        - `data`: can be a `String`, `Number`, `Buffer`, `ArrayBuffer`
+      - `Boolean`: optional, binary support
+      - `Function`: callback, returns the encoded packet (`cb(String)`)
+- `decodePacket`
+    - Decodes a packet. Data also available as an ArrayBuffer if requested.
+    - Returns data as `String` or (`Blob` on browser, `ArrayBuffer` on Node)
+    - **Parameters**
+      - `String` | `ArrayBuffer`: the packet to decode, has `type` and `data`
+      - `String`: optional, the binary type
+
+- `encodeBase64Packet`
+    - Encodes a packet with binary data in a base64 string (`String`)
+    - **Parameters**
+      - `Object`: the packet to encode, has `type` and `data`
+      - `Function`: callback, returns the base64 encoded message (`cb(String)`)
+- `decodeBase64Packet`
+    - Decodes a packet encoded in a base64 string.
+    - **Parameters**
+      - `String`: the base64 encoded message
+      - `String`: optional, the binary type
+
+- `encodePayload`
+    - Encodes multiple messages (payload).
+    - If any contents are binary, they will be encoded as base64 strings. Base64
+      encoded strings are marked with a b before the length specifier
+    - **Parameters**
+      - `Array`: an array of packets
+      - `Boolean`: optional, binary support
+      - `Function`: callback, returns the encoded payload (`cb(String)`)
+- `decodePayload`
+    - Decodes data when a payload is maybe expected. Possible binary contents are
+      decoded from their base64 representation.
+    - **Parameters**
+      - `String`: the payload
+      - `String`: optional, the binary type
+      - `Function`: callback, returns (cb(`Object`: packet, `Number`:packet index, `Number`:packet total))
+
+- `encodePayloadAsBinary`
+    - Encodes multiple messages (payload) as binary.
+    - **Parameters**
+      - `Array`: an array of packets
+      - `Function`: callback, returns the encoded payload (`cb(Buffer)`)
+- `decodePayloadAsBinary`
+    - Decodes data when a payload is maybe expected. Strings are decoded by
+      interpreting each byte as a key code for entries marked to start with 0. See
+      description of encodePayloadAsBinary.
+    - **Parameters**
+      - `Buffer`: the buffer
+      - `String`: optional, the binary type
+      - `Function`: callback, returns the decoded packet (`cb(Object)`)
+
+### Browser
+
+- `encodePayloadAsArrayBuffer`
+    - Encodes multiple messages (payload) as binary.
+    - **Parameters**
+      - `Array`: an array of packets
+      - `Function`: callback, returns the encoded payload (`cb(ArrayBuffer)`)
+- `encodePayloadAsBlob`
+    - Encodes multiple messages (payload) as blob.
+    - **Parameters**
+      - `Array`: an array of packets
+      - `Function`: callback, returns the encoded payload (`cb(Blob)`)
+
+## Tests
+
+Standalone tests can be run with `make test` which will run both node.js and browser tests.
+
+Browser tests are run using [zuul](https://github.com/defunctzombie/zuul).
+(You must have zuul setup with a saucelabs account.)
+
+You can run the tests locally using the following command:
+
+```
+./node_modules/.bin/zuul --local 8080 -- test/index.js
+```
+
+## Support
+
+The support channels for `engine.io-parser` are the same as `socket.io`:
+  - irc.freenode.net **#socket.io**
+  - [Google Groups](http://groups.google.com/group/socket_io)
+  - [Website](http://socket.io)
+
+## Development
+
+To contribute patches, run tests or benchmarks, make sure to clone the
+repository:
+
+```bash
+git clone git://github.com/LearnBoost/engine.io-parser.git
+```
+
+Then:
+
+```bash
+cd engine.io-parser
+npm install
+```
+
+See the `Tests` section above for how to run tests before submitting any patches.
+
+## License
+
+MIT
--- a/node_modules/engine.io-parser/lib/browser.js
+++ b/node_modules/engine.io-parser/lib/browser.js
@ -0,0 +1,605 @@
+/**
+ * Module dependencies.
+ */
+
+var keys = require('./keys');
+var hasBinary = require('has-binary2');
+var sliceBuffer = require('arraybuffer.slice');
+var after = require('after');
+var utf8 = require('./utf8');
+
+var base64encoder;
+if (typeof ArrayBuffer !== 'undefined') {
+  base64encoder = require('base64-arraybuffer');
+}
+
+/**
+ * Check if we are running an android browser. That requires us to use
+ * ArrayBuffer with polling transports...
+ *
+ * http://ghinda.net/jpeg-blob-ajax-android/
+ */
+
+var isAndroid = typeof navigator !== 'undefined' && /Android/i.test(navigator.userAgent);
+
+/**
+ * Check if we are running in PhantomJS.
+ * Uploading a Blob with PhantomJS does not work correctly, as reported here:
+ * https://github.com/ariya/phantomjs/issues/11395
+ * @type boolean
+ */
+var isPhantomJS = typeof navigator !== 'undefined' && /PhantomJS/i.test(navigator.userAgent);
+
+/**
+ * When true, avoids using Blobs to encode payloads.
+ * @type boolean
+ */
+var dontSendBlobs = isAndroid || isPhantomJS;
+
+/**
+ * Current protocol version.
+ */
+
+exports.protocol = 3;
+
+/**
+ * Packet types.
+ */
+
+var packets = exports.packets = {
+    open:     0    // non-ws
+  , close:    1    // non-ws
+  , ping:     2
+  , pong:     3
+  , message:  4
+  , upgrade:  5
+  , noop:     6
+};
+
+var packetslist = keys(packets);
+
+/**
+ * Premade error packet.
+ */
+
+var err = { type: 'error', data: 'parser error' };
+
+/**
+ * Create a blob api even for blob builder when vendor prefixes exist
+ */
+
+var Blob = require('blob');
+
+/**
+ * Encodes a packet.
+ *
+ *     <packet type id> [ <data> ]
+ *
+ * Example:
+ *
+ *     5hello world
+ *     3
+ *     4
+ *
+ * Binary is encoded in an identical principle
+ *
+ * @api private
+ */
+
+exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
+  if (typeof supportsBinary === 'function') {
+    callback = supportsBinary;
+    supportsBinary = false;
+  }
+
+  if (typeof utf8encode === 'function') {
+    callback = utf8encode;
+    utf8encode = null;
+  }
+
+  var data = (packet.data === undefined)
+    ? undefined
+    : packet.data.buffer || packet.data;
+
+  if (typeof ArrayBuffer !== 'undefined' && data instanceof ArrayBuffer) {
+    return encodeArrayBuffer(packet, supportsBinary, callback);
+  } else if (typeof Blob !== 'undefined' && data instanceof Blob) {
+    return encodeBlob(packet, supportsBinary, callback);
+  }
+
+  // might be an object with { base64: true, data: dataAsBase64String }
+  if (data && data.base64) {
+    return encodeBase64Object(packet, callback);
+  }
+
+  // Sending data as a utf-8 string
+  var encoded = packets[packet.type];
+
+  // data fragment is optional
+  if (undefined !== packet.data) {
+    encoded += utf8encode ? utf8.encode(String(packet.data), { strict: false }) : String(packet.data);
+  }
+
+  return callback('' + encoded);
+
+};
+
+function encodeBase64Object(packet, callback) {
+  // packet data is an object { base64: true, data: dataAsBase64String }
+  var message = 'b' + exports.packets[packet.type] + packet.data.data;
+  return callback(message);
+}
+
+/**
+ * Encode packet helpers for binary types
+ */
+
+function encodeArrayBuffer(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  var data = packet.data;
+  var contentArray = new Uint8Array(data);
+  var resultBuffer = new Uint8Array(1 + data.byteLength);
+
+  resultBuffer[0] = packets[packet.type];
+  for (var i = 0; i < contentArray.length; i++) {
+    resultBuffer[i+1] = contentArray[i];
+  }
+
+  return callback(resultBuffer.buffer);
+}
+
+function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  var fr = new FileReader();
+  fr.onload = function() {
+    exports.encodePacket({ type: packet.type, data: fr.result }, supportsBinary, true, callback);
+  };
+  return fr.readAsArrayBuffer(packet.data);
+}
+
+function encodeBlob(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  if (dontSendBlobs) {
+    return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
+  }
+
+  var length = new Uint8Array(1);
+  length[0] = packets[packet.type];
+  var blob = new Blob([length.buffer, packet.data]);
+
+  return callback(blob);
+}
+
+/**
+ * Encodes a packet with binary data in a base64 string
+ *
+ * @param {Object} packet, has `type` and `data`
+ * @return {String} base64 encoded message
+ */
+
+exports.encodeBase64Packet = function(packet, callback) {
+  var message = 'b' + exports.packets[packet.type];
+  if (typeof Blob !== 'undefined' && packet.data instanceof Blob) {
+    var fr = new FileReader();
+    fr.onload = function() {
+      var b64 = fr.result.split(',')[1];
+      callback(message + b64);
+    };
+    return fr.readAsDataURL(packet.data);
+  }
+
+  var b64data;
+  try {
+    b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
+  } catch (e) {
+    // iPhone Safari doesn't let you apply with typed arrays
+    var typed = new Uint8Array(packet.data);
+    var basic = new Array(typed.length);
+    for (var i = 0; i < typed.length; i++) {
+      basic[i] = typed[i];
+    }
+    b64data = String.fromCharCode.apply(null, basic);
+  }
+  message += btoa(b64data);
+  return callback(message);
+};
+
+/**
+ * Decodes a packet. Changes format to Blob if requested.
+ *
+ * @return {Object} with `type` and `data` (if any)
+ * @api private
+ */
+
+exports.decodePacket = function (data, binaryType, utf8decode) {
+  if (data === undefined) {
+    return err;
+  }
+  // String data
+  if (typeof data === 'string') {
+    if (data.charAt(0) === 'b') {
+      return exports.decodeBase64Packet(data.substr(1), binaryType);
+    }
+
+    if (utf8decode) {
+      data = tryDecode(data);
+      if (data === false) {
+        return err;
+      }
+    }
+    var type = data.charAt(0);
+
+    if (Number(type) != type || !packetslist[type]) {
+      return err;
+    }
+
+    if (data.length > 1) {
+      return { type: packetslist[type], data: data.substring(1) };
+    } else {
+      return { type: packetslist[type] };
+    }
+  }
+
+  var asArray = new Uint8Array(data);
+  var type = asArray[0];
+  var rest = sliceBuffer(data, 1);
+  if (Blob && binaryType === 'blob') {
+    rest = new Blob([rest]);
+  }
+  return { type: packetslist[type], data: rest };
+};
+
+function tryDecode(data) {
+  try {
+    data = utf8.decode(data, { strict: false });
+  } catch (e) {
+    return false;
+  }
+  return data;
+}
+
+/**
+ * Decodes a packet encoded in a base64 string
+ *
+ * @param {String} base64 encoded message
+ * @return {Object} with `type` and `data` (if any)
+ */
+
+exports.decodeBase64Packet = function(msg, binaryType) {
+  var type = packetslist[msg.charAt(0)];
+  if (!base64encoder) {
+    return { type: type, data: { base64: true, data: msg.substr(1) } };
+  }
+
+  var data = base64encoder.decode(msg.substr(1));
+
+  if (binaryType === 'blob' && Blob) {
+    data = new Blob([data]);
+  }
+
+  return { type: type, data: data };
+};
+
+/**
+ * Encodes multiple messages (payload).
+ *
+ *     <length>:data
+ *
+ * Example:
+ *
+ *     11:hello world2:hi
+ *
+ * If any contents are binary, they will be encoded as base64 strings. Base64
+ * encoded strings are marked with a b before the length specifier
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+exports.encodePayload = function (packets, supportsBinary, callback) {
+  if (typeof supportsBinary === 'function') {
+    callback = supportsBinary;
+    supportsBinary = null;
+  }
+
+  var isBinary = hasBinary(packets);
+
+  if (supportsBinary && isBinary) {
+    if (Blob && !dontSendBlobs) {
+      return exports.encodePayloadAsBlob(packets, callback);
+    }
+
+    return exports.encodePayloadAsArrayBuffer(packets, callback);
+  }
+
+  if (!packets.length) {
+    return callback('0:');
+  }
+
+  function setLengthHeader(message) {
+    return message.length + ':' + message;
+  }
+
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, !isBinary ? false : supportsBinary, false, function(message) {
+      doneCallback(null, setLengthHeader(message));
+    });
+  }
+
+  map(packets, encodeOne, function(err, results) {
+    return callback(results.join(''));
+  });
+};
+
+/**
+ * Async array map using after
+ */
+
+function map(ary, each, done) {
+  var result = new Array(ary.length);
+  var next = after(ary.length, done);
+
+  var eachWithIndex = function(i, el, cb) {
+    each(el, function(error, msg) {
+      result[i] = msg;
+      cb(error, result);
+    });
+  };
+
+  for (var i = 0; i < ary.length; i++) {
+    eachWithIndex(i, ary[i], next);
+  }
+}
+
+/*
+ * Decodes data when a payload is maybe expected. Possible binary contents are
+ * decoded from their base64 representation
+ *
+ * @param {String} data, callback method
+ * @api public
+ */
+
+exports.decodePayload = function (data, binaryType, callback) {
+  if (typeof data !== 'string') {
+    return exports.decodePayloadAsBinary(data, binaryType, callback);
+  }
+
+  if (typeof binaryType === 'function') {
+    callback = binaryType;
+    binaryType = null;
+  }
+
+  var packet;
+  if (data === '') {
+    // parser error - ignoring payload
+    return callback(err, 0, 1);
+  }
+
+  var length = '', n, msg;
+
+  for (var i = 0, l = data.length; i < l; i++) {
+    var chr = data.charAt(i);
+
+    if (chr !== ':') {
+      length += chr;
+      continue;
+    }
+
+    if (length === '' || (length != (n = Number(length)))) {
+      // parser error - ignoring payload
+      return callback(err, 0, 1);
+    }
+
+    msg = data.substr(i + 1, n);
+
+    if (length != msg.length) {
+      // parser error - ignoring payload
+      return callback(err, 0, 1);
+    }
+
+    if (msg.length) {
+      packet = exports.decodePacket(msg, binaryType, false);
+
+      if (err.type === packet.type && err.data === packet.data) {
+        // parser error in individual packet - ignoring payload
+        return callback(err, 0, 1);
+      }
+
+      var ret = callback(packet, i + n, l);
+      if (false === ret) return;
+    }
+
+    // advance cursor
+    i += n;
+    length = '';
+  }
+
+  if (length !== '') {
+    // parser error - ignoring payload
+    return callback(err, 0, 1);
+  }
+
+};
+
+/**
+ * Encodes multiple messages (payload) as binary.
+ *
+ * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
+ * 255><data>
+ *
+ * Example:
+ * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
+ *
+ * @param {Array} packets
+ * @return {ArrayBuffer} encoded payload
+ * @api private
+ */
+
+exports.encodePayloadAsArrayBuffer = function(packets, callback) {
+  if (!packets.length) {
+    return callback(new ArrayBuffer(0));
+  }
+
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, true, true, function(data) {
+      return doneCallback(null, data);
+    });
+  }
+
+  map(packets, encodeOne, function(err, encodedPackets) {
+    var totalLength = encodedPackets.reduce(function(acc, p) {
+      var len;
+      if (typeof p === 'string'){
+        len = p.length;
+      } else {
+        len = p.byteLength;
+      }
+      return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
+    }, 0);
+
+    var resultArray = new Uint8Array(totalLength);
+
+    var bufferIndex = 0;
+    encodedPackets.forEach(function(p) {
+      var isString = typeof p === 'string';
+      var ab = p;
+      if (isString) {
+        var view = new Uint8Array(p.length);
+        for (var i = 0; i < p.length; i++) {
+          view[i] = p.charCodeAt(i);
+        }
+        ab = view.buffer;
+      }
+
+      if (isString) { // not true binary
+        resultArray[bufferIndex++] = 0;
+      } else { // true binary
+        resultArray[bufferIndex++] = 1;
+      }
+
+      var lenStr = ab.byteLength.toString();
+      for (var i = 0; i < lenStr.length; i++) {
+        resultArray[bufferIndex++] = parseInt(lenStr[i]);
+      }
+      resultArray[bufferIndex++] = 255;
+
+      var view = new Uint8Array(ab);
+      for (var i = 0; i < view.length; i++) {
+        resultArray[bufferIndex++] = view[i];
+      }
+    });
+
+    return callback(resultArray.buffer);
+  });
+};
+
+/**
+ * Encode as Blob
+ */
+
+exports.encodePayloadAsBlob = function(packets, callback) {
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, true, true, function(encoded) {
+      var binaryIdentifier = new Uint8Array(1);
+      binaryIdentifier[0] = 1;
+      if (typeof encoded === 'string') {
+        var view = new Uint8Array(encoded.length);
+        for (var i = 0; i < encoded.length; i++) {
+          view[i] = encoded.charCodeAt(i);
+        }
+        encoded = view.buffer;
+        binaryIdentifier[0] = 0;
+      }
+
+      var len = (encoded instanceof ArrayBuffer)
+        ? encoded.byteLength
+        : encoded.size;
+
+      var lenStr = len.toString();
+      var lengthAry = new Uint8Array(lenStr.length + 1);
+      for (var i = 0; i < lenStr.length; i++) {
+        lengthAry[i] = parseInt(lenStr[i]);
+      }
+      lengthAry[lenStr.length] = 255;
+
+      if (Blob) {
+        var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
+        doneCallback(null, blob);
+      }
+    });
+  }
+
+  map(packets, encodeOne, function(err, results) {
+    return callback(new Blob(results));
+  });
+};
+
+/*
+ * Decodes data when a payload is maybe expected. Strings are decoded by
+ * interpreting each byte as a key code for entries marked to start with 0. See
+ * description of encodePayloadAsBinary
+ *
+ * @param {ArrayBuffer} data, callback method
+ * @api public
+ */
+
+exports.decodePayloadAsBinary = function (data, binaryType, callback) {
+  if (typeof binaryType === 'function') {
+    callback = binaryType;
+    binaryType = null;
+  }
+
+  var bufferTail = data;
+  var buffers = [];
+
+  while (bufferTail.byteLength > 0) {
+    var tailArray = new Uint8Array(bufferTail);
+    var isString = tailArray[0] === 0;
+    var msgLength = '';
+
+    for (var i = 1; ; i++) {
+      if (tailArray[i] === 255) break;
+
+      // 310 = char length of Number.MAX_VALUE
+      if (msgLength.length > 310) {
+        return callback(err, 0, 1);
+      }
+
+      msgLength += tailArray[i];
+    }
+
+    bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
+    msgLength = parseInt(msgLength);
+
+    var msg = sliceBuffer(bufferTail, 0, msgLength);
+    if (isString) {
+      try {
+        msg = String.fromCharCode.apply(null, new Uint8Array(msg));
+      } catch (e) {
+        // iPhone Safari doesn't let you apply to typed arrays
+        var typed = new Uint8Array(msg);
+        msg = '';
+        for (var i = 0; i < typed.length; i++) {
+          msg += String.fromCharCode(typed[i]);
+        }
+      }
+    }
+
+    buffers.push(msg);
+    bufferTail = sliceBuffer(bufferTail, msgLength);
+  }
+
+  var total = buffers.length;
+  buffers.forEach(function(buffer, i) {
+    callback(exports.decodePacket(buffer, binaryType, true), i, total);
+  });
+};
--- a/node_modules/engine.io-parser/lib/index.js
+++ b/node_modules/engine.io-parser/lib/index.js
@ -0,0 +1,476 @@
+/**
+ * Module dependencies.
+ */
+
+var utf8 = require('./utf8');
+var hasBinary = require('has-binary2');
+var after = require('after');
+var keys = require('./keys');
+
+/**
+ * Current protocol version.
+ */
+exports.protocol = 3;
+
+/**
+ * Packet types.
+ */
+
+var packets = exports.packets = {
+    open:     0    // non-ws
+  , close:    1    // non-ws
+  , ping:     2
+  , pong:     3
+  , message:  4
+  , upgrade:  5
+  , noop:     6
+};
+
+var packetslist = keys(packets);
+
+/**
+ * Premade error packet.
+ */
+
+var err = { type: 'error', data: 'parser error' };
+
+/**
+ * Encodes a packet.
+ *
+ *     <packet type id> [ <data> ]
+ *
+ * Example:
+ *
+ *     5hello world
+ *     3
+ *     4
+ *
+ * Binary is encoded in an identical principle
+ *
+ * @api private
+ */
+
+exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
+  if (typeof supportsBinary === 'function') {
+    callback = supportsBinary;
+    supportsBinary = null;
+  }
+
+  if (typeof utf8encode === 'function') {
+    callback = utf8encode;
+    utf8encode = null;
+  }
+
+  if (Buffer.isBuffer(packet.data)) {
+    return encodeBuffer(packet, supportsBinary, callback);
+  } else if (packet.data && (packet.data.buffer || packet.data) instanceof ArrayBuffer) {
+    return encodeBuffer({ type: packet.type, data: arrayBufferToBuffer(packet.data) }, supportsBinary, callback);
+  }
+
+  // Sending data as a utf-8 string
+  var encoded = packets[packet.type];
+
+  // data fragment is optional
+  if (undefined !== packet.data) {
+    encoded += utf8encode ? utf8.encode(String(packet.data), { strict: false }) : String(packet.data);
+  }
+
+  return callback('' + encoded);
+};
+
+/**
+ * Encode Buffer data
+ */
+
+function encodeBuffer(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  var data = packet.data;
+  var typeBuffer = new Buffer(1);
+  typeBuffer[0] = packets[packet.type];
+  return callback(Buffer.concat([typeBuffer, data]));
+}
+
+/**
+ * Encodes a packet with binary data in a base64 string
+ *
+ * @param {Object} packet, has `type` and `data`
+ * @return {String} base64 encoded message
+ */
+
+exports.encodeBase64Packet = function(packet, callback){
+  var data = Buffer.isBuffer(packet.data) ? packet.data : arrayBufferToBuffer(packet.data);
+  var message = 'b' + packets[packet.type];
+  message += data.toString('base64');
+  return callback(message);
+};
+
+/**
+ * Decodes a packet. Data also available as an ArrayBuffer if requested.
+ *
+ * @return {Object} with `type` and `data` (if any)
+ * @api private
+ */
+
+exports.decodePacket = function (data, binaryType, utf8decode) {
+  if (data === undefined) {
+    return err;
+  }
+
+  var type;
+
+  // String data
+  if (typeof data === 'string') {
+
+    type = data.charAt(0);
+
+    if (type === 'b') {
+      return exports.decodeBase64Packet(data.substr(1), binaryType);
+    }
+
+    if (utf8decode) {
+      data = tryDecode(data);
+      if (data === false) {
+        return err;
+      }
+    }
+
+    if (Number(type) != type || !packetslist[type]) {
+      return err;
+    }
+
+    if (data.length > 1) {
+      return { type: packetslist[type], data: data.substring(1) };
+    } else {
+      return { type: packetslist[type] };
+    }
+  }
+
+  // Binary data
+  if (binaryType === 'arraybuffer') {
+    // wrap Buffer/ArrayBuffer data into an Uint8Array
+    var intArray = new Uint8Array(data);
+    type = intArray[0];
+    return { type: packetslist[type], data: intArray.buffer.slice(1) };
+  }
+
+  if (data instanceof ArrayBuffer) {
+    data = arrayBufferToBuffer(data);
+  }
+  type = data[0];
+  return { type: packetslist[type], data: data.slice(1) };
+};
+
+function tryDecode(data) {
+  try {
+    data = utf8.decode(data, { strict: false });
+  } catch (e) {
+    return false;
+  }
+  return data;
+}
+
+/**
+ * Decodes a packet encoded in a base64 string.
+ *
+ * @param {String} base64 encoded message
+ * @return {Object} with `type` and `data` (if any)
+ */
+
+exports.decodeBase64Packet = function(msg, binaryType) {
+  var type = packetslist[msg.charAt(0)];
+  var data = new Buffer(msg.substr(1), 'base64');
+  if (binaryType === 'arraybuffer') {
+    var abv = new Uint8Array(data.length);
+    for (var i = 0; i < abv.length; i++){
+      abv[i] = data[i];
+    }
+    data = abv.buffer;
+  }
+  return { type: type, data: data };
+};
+
+/**
+ * Encodes multiple messages (payload).
+ *
+ *     <length>:data
+ *
+ * Example:
+ *
+ *     11:hello world2:hi
+ *
+ * If any contents are binary, they will be encoded as base64 strings. Base64
+ * encoded strings are marked with a b before the length specifier
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+exports.encodePayload = function (packets, supportsBinary, callback) {
+  if (typeof supportsBinary === 'function') {
+    callback = supportsBinary;
+    supportsBinary = null;
+  }
+
+  if (supportsBinary && hasBinary(packets)) {
+    return exports.encodePayloadAsBinary(packets, callback);
+  }
+
+  if (!packets.length) {
+    return callback('0:');
+  }
+
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, supportsBinary, false, function(message) {
+      doneCallback(null, setLengthHeader(message));
+    });
+  }
+
+  map(packets, encodeOne, function(err, results) {
+    return callback(results.join(''));
+  });
+};
+
+function setLengthHeader(message) {
+  return message.length + ':' + message;
+}
+
+/**
+ * Async array map using after
+ */
+
+function map(ary, each, done) {
+  var result = new Array(ary.length);
+  var next = after(ary.length, done);
+
+  for (var i = 0; i < ary.length; i++) {
+    each(ary[i], function(error, msg) {
+      result[i] = msg;
+      next(error, result);
+    });
+  }
+}
+
+/*
+ * Decodes data when a payload is maybe expected. Possible binary contents are
+ * decoded from their base64 representation
+ *
+ * @param {String} data, callback method
+ * @api public
+ */
+
+exports.decodePayload = function (data, binaryType, callback) {
+  if (typeof data !== 'string') {
+    return exports.decodePayloadAsBinary(data, binaryType, callback);
+  }
+
+  if (typeof binaryType === 'function') {
+    callback = binaryType;
+    binaryType = null;
+  }
+
+  if (data === '') {
+    // parser error - ignoring payload
+    return callback(err, 0, 1);
+  }
+
+  var length = '', n, msg, packet;
+
+  for (var i = 0, l = data.length; i < l; i++) {
+    var chr = data.charAt(i);
+
+    if (chr !== ':') {
+      length += chr;
+      continue;
+    }
+
+    if (length === '' || (length != (n = Number(length)))) {
+      // parser error - ignoring payload
+      return callback(err, 0, 1);
+    }
+
+    msg = data.substr(i + 1, n);
+
+    if (length != msg.length) {
+      // parser error - ignoring payload
+      return callback(err, 0, 1);
+    }
+
+    if (msg.length) {
+      packet = exports.decodePacket(msg, binaryType, false);
+
+      if (err.type === packet.type && err.data === packet.data) {
+        // parser error in individual packet - ignoring payload
+        return callback(err, 0, 1);
+      }
+
+      var more = callback(packet, i + n, l);
+      if (false === more) return;
+    }
+
+    // advance cursor
+    i += n;
+    length = '';
+  }
+
+  if (length !== '') {
+    // parser error - ignoring payload
+    return callback(err, 0, 1);
+  }
+
+};
+
+/**
+ *
+ * Converts a buffer to a utf8.js encoded string
+ *
+ * @api private
+ */
+
+function bufferToString(buffer) {
+  var str = '';
+  for (var i = 0, l = buffer.length; i < l; i++) {
+    str += String.fromCharCode(buffer[i]);
+  }
+  return str;
+}
+
+/**
+ *
+ * Converts a utf8.js encoded string to a buffer
+ *
+ * @api private
+ */
+
+function stringToBuffer(string) {
+  var buf = new Buffer(string.length);
+  for (var i = 0, l = string.length; i < l; i++) {
+    buf.writeUInt8(string.charCodeAt(i), i);
+  }
+  return buf;
+}
+
+/**
+ *
+ * Converts an ArrayBuffer to a Buffer
+ *
+ * @api private
+ */
+
+function arrayBufferToBuffer(data) {
+  // data is either an ArrayBuffer or ArrayBufferView.
+  var array = new Uint8Array(data.buffer || data);
+  var length = data.byteLength || data.length;
+  var offset = data.byteOffset || 0;
+  var buffer = new Buffer(length);
+
+  for (var i = 0; i < length; i++) {
+    buffer[i] = array[offset + i];
+  }
+  return buffer;
+}
+
+/**
+ * Encodes multiple messages (payload) as binary.
+ *
+ * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
+ * 255><data>
+ *
+ * Example:
+ * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
+ *
+ * @param {Array} packets
+ * @return {Buffer} encoded payload
+ * @api private
+ */
+
+exports.encodePayloadAsBinary = function (packets, callback) {
+  if (!packets.length) {
+    return callback(new Buffer(0));
+  }
+
+  map(packets, encodeOneBinaryPacket, function(err, results) {
+    return callback(Buffer.concat(results));
+  });
+};
+
+function encodeOneBinaryPacket(p, doneCallback) {
+
+  function onBinaryPacketEncode(packet) {
+
+    var encodingLength = '' + packet.length;
+    var sizeBuffer;
+
+    if (typeof packet === 'string') {
+      sizeBuffer = new Buffer(encodingLength.length + 2);
+      sizeBuffer[0] = 0; // is a string (not true binary = 0)
+      for (var i = 0; i < encodingLength.length; i++) {
+        sizeBuffer[i + 1] = parseInt(encodingLength[i], 10);
+      }
+      sizeBuffer[sizeBuffer.length - 1] = 255;
+      return doneCallback(null, Buffer.concat([sizeBuffer, stringToBuffer(packet)]));
+    }
+
+    sizeBuffer = new Buffer(encodingLength.length + 2);
+    sizeBuffer[0] = 1; // is binary (true binary = 1)
+    for (var i = 0; i < encodingLength.length; i++) {
+      sizeBuffer[i + 1] = parseInt(encodingLength[i], 10);
+    }
+    sizeBuffer[sizeBuffer.length - 1] = 255;
+
+    doneCallback(null, Buffer.concat([sizeBuffer, packet]));
+  }
+
+  exports.encodePacket(p, true, true, onBinaryPacketEncode);
+
+}
+
+
+/*
+ * Decodes data when a payload is maybe expected. Strings are decoded by
+ * interpreting each byte as a key code for entries marked to start with 0. See
+ * description of encodePayloadAsBinary
+
+ * @param {Buffer} data, callback method
+ * @api public
+ */
+
+exports.decodePayloadAsBinary = function (data, binaryType, callback) {
+  if (typeof binaryType === 'function') {
+    callback = binaryType;
+    binaryType = null;
+  }
+
+  var bufferTail = data;
+  var buffers = [];
+  var i;
+
+  while (bufferTail.length > 0) {
+    var strLen = '';
+    var isString = bufferTail[0] === 0;
+    for (i = 1; ; i++) {
+      if (bufferTail[i] === 255)  break;
+      // 310 = char length of Number.MAX_VALUE
+      if (strLen.length > 310) {
+        return callback(err, 0, 1);
+      }
+      strLen += '' + bufferTail[i];
+    }
+    bufferTail = bufferTail.slice(strLen.length + 1);
+
+    var msgLength = parseInt(strLen, 10);
+
+    var msg = bufferTail.slice(1, msgLength + 1);
+    if (isString) msg = bufferToString(msg);
+    buffers.push(msg);
+    bufferTail = bufferTail.slice(msgLength + 1);
+  }
+
+  var total = buffers.length;
+  for (i = 0; i < total; i++) {
+    var buffer = buffers[i];
+    callback(exports.decodePacket(buffer, binaryType, true), i, total);
+  }
+};
--- a/node_modules/engine.io-parser/lib/keys.js
+++ b/node_modules/engine.io-parser/lib/keys.js
@ -0,0 +1,19 @@
+
+/**
+ * Gets the keys for an object.
+ *
+ * @return {Array} keys
+ * @api private
+ */
+
+module.exports = Object.keys || function keys (obj){
+  var arr = [];
+  var has = Object.prototype.hasOwnProperty;
+
+  for (var i in obj) {
+    if (has.call(obj, i)) {
+      arr.push(i);
+    }
+  }
+  return arr;
+};
--- a/node_modules/engine.io-parser/lib/utf8.js
+++ b/node_modules/engine.io-parser/lib/utf8.js
@ -0,0 +1,210 @@
+/*! https://mths.be/utf8js v2.1.2 by @mathias */
+
+var stringFromCharCode = String.fromCharCode;
+
+// Taken from https://mths.be/punycode
+function ucs2decode(string) {
+	var output = [];
+	var counter = 0;
+	var length = string.length;
+	var value;
+	var extra;
+	while (counter < length) {
+		value = string.charCodeAt(counter++);
+		if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
+			// high surrogate, and there is a next character
+			extra = string.charCodeAt(counter++);
+			if ((extra & 0xFC00) == 0xDC00) { // low surrogate
+				output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
+			} else {
+				// unmatched surrogate; only append this code unit, in case the next
+				// code unit is the high surrogate of a surrogate pair
+				output.push(value);
+				counter--;
+			}
+		} else {
+			output.push(value);
+		}
+	}
+	return output;
+}
+
+// Taken from https://mths.be/punycode
+function ucs2encode(array) {
+	var length = array.length;
+	var index = -1;
+	var value;
+	var output = '';
+	while (++index < length) {
+		value = array[index];
+		if (value > 0xFFFF) {
+			value -= 0x10000;
+			output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
+			value = 0xDC00 | value & 0x3FF;
+		}
+		output += stringFromCharCode(value);
+	}
+	return output;
+}
+
+function checkScalarValue(codePoint, strict) {
+	if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
+		if (strict) {
+			throw Error(
+				'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
+				' is not a scalar value'
+			);
+		}
+		return false;
+	}
+	return true;
+}
+/*--------------------------------------------------------------------------*/
+
+function createByte(codePoint, shift) {
+	return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
+}
+
+function encodeCodePoint(codePoint, strict) {
+	if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
+		return stringFromCharCode(codePoint);
+	}
+	var symbol = '';
+	if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
+		symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
+	}
+	else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
+		if (!checkScalarValue(codePoint, strict)) {
+			codePoint = 0xFFFD;
+		}
+		symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
+		symbol += createByte(codePoint, 6);
+	}
+	else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
+		symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
+		symbol += createByte(codePoint, 12);
+		symbol += createByte(codePoint, 6);
+	}
+	symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
+	return symbol;
+}
+
+function utf8encode(string, opts) {
+	opts = opts || {};
+	var strict = false !== opts.strict;
+
+	var codePoints = ucs2decode(string);
+	var length = codePoints.length;
+	var index = -1;
+	var codePoint;
+	var byteString = '';
+	while (++index < length) {
+		codePoint = codePoints[index];
+		byteString += encodeCodePoint(codePoint, strict);
+	}
+	return byteString;
+}
+
+/*--------------------------------------------------------------------------*/
+
+function readContinuationByte() {
+	if (byteIndex >= byteCount) {
+		throw Error('Invalid byte index');
+	}
+
+	var continuationByte = byteArray[byteIndex] & 0xFF;
+	byteIndex++;
+
+	if ((continuationByte & 0xC0) == 0x80) {
+		return continuationByte & 0x3F;
+	}
+
+	// If we end up here, it’s not a continuation byte
+	throw Error('Invalid continuation byte');
+}
+
+function decodeSymbol(strict) {
+	var byte1;
+	var byte2;
+	var byte3;
+	var byte4;
+	var codePoint;
+
+	if (byteIndex > byteCount) {
+		throw Error('Invalid byte index');
+	}
+
+	if (byteIndex == byteCount) {
+		return false;
+	}
+
+	// Read first byte
+	byte1 = byteArray[byteIndex] & 0xFF;
+	byteIndex++;
+
+	// 1-byte sequence (no continuation bytes)
+	if ((byte1 & 0x80) == 0) {
+		return byte1;
+	}
+
+	// 2-byte sequence
+	if ((byte1 & 0xE0) == 0xC0) {
+		byte2 = readContinuationByte();
+		codePoint = ((byte1 & 0x1F) << 6) | byte2;
+		if (codePoint >= 0x80) {
+			return codePoint;
+		} else {
+			throw Error('Invalid continuation byte');
+		}
+	}
+
+	// 3-byte sequence (may include unpaired surrogates)
+	if ((byte1 & 0xF0) == 0xE0) {
+		byte2 = readContinuationByte();
+		byte3 = readContinuationByte();
+		codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
+		if (codePoint >= 0x0800) {
+			return checkScalarValue(codePoint, strict) ? codePoint : 0xFFFD;
+		} else {
+			throw Error('Invalid continuation byte');
+		}
+	}
+
+	// 4-byte sequence
+	if ((byte1 & 0xF8) == 0xF0) {
+		byte2 = readContinuationByte();
+		byte3 = readContinuationByte();
+		byte4 = readContinuationByte();
+		codePoint = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0C) |
+			(byte3 << 0x06) | byte4;
+		if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
+			return codePoint;
+		}
+	}
+
+	throw Error('Invalid UTF-8 detected');
+}
+
+var byteArray;
+var byteCount;
+var byteIndex;
+function utf8decode(byteString, opts) {
+	opts = opts || {};
+	var strict = false !== opts.strict;
+
+	byteArray = ucs2decode(byteString);
+	byteCount = byteArray.length;
+	byteIndex = 0;
+	var codePoints = [];
+	var tmp;
+	while ((tmp = decodeSymbol(strict)) !== false) {
+		codePoints.push(tmp);
+	}
+	return ucs2encode(codePoints);
+}
+
+module.exports = {
+	version: '2.1.2',
+	encode: utf8encode,
+	decode: utf8decode
+};
--- a/node_modules/engine.io-parser/package.json
+++ b/node_modules/engine.io-parser/package.json
@ -0,0 +1,61 @@
+{
+  "_from": "engine.io-parser@~2.1.1",
+  "_id": "engine.io-parser@2.1.3",
+  "_inBundle": false,
+  "_integrity": "sha512-6HXPre2O4Houl7c4g7Ic/XzPnHBvaEmN90vtRO9uLmwtRqQmTOw0QMevL1TOfL2Cpu1VzsaTmMotQgMdkzGkVA==",
+  "_location": "/engine.io-parser",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "engine.io-parser@~2.1.1",
+    "name": "engine.io-parser",
+    "escapedName": "engine.io-parser",
+    "rawSpec": "~2.1.1",
+    "saveSpec": null,
+    "fetchSpec": "~2.1.1"
+  },
+  "_requiredBy": [
+    "/engine.io-client"
+  ],
+  "_resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-2.1.3.tgz",
+  "_shasum": "757ab970fbf2dfb32c7b74b033216d5739ef79a6",
+  "_spec": "engine.io-parser@~2.1.1",
+  "_where": "/home/sergiu/linx-audio-simulator/node_modules/engine.io-client",
+  "browser": "./lib/browser.js",
+  "bugs": {
+    "url": "https://github.com/socketio/engine.io-parser/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "after": "0.8.2",
+    "arraybuffer.slice": "~0.0.7",
+    "base64-arraybuffer": "0.1.5",
+    "blob": "0.0.5",
+    "has-binary2": "~1.0.2"
+  },
+  "deprecated": false,
+  "description": "Parser for the client for the realtime Engine",
+  "devDependencies": {
+    "expect.js": "0.3.1",
+    "mocha": "^5.2.0",
+    "socket.io-browsers": "^1.0.2",
+    "zuul": "3.11.1",
+    "zuul-ngrok": "4.0.0"
+  },
+  "files": [
+    "lib/"
+  ],
+  "homepage": "https://github.com/socketio/engine.io-parser",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "name": "engine.io-parser",
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/socketio/engine.io-parser.git"
+  },
+  "scripts": {
+    "test": "make test"
+  },
+  "version": "2.1.3"
+}