Update contrib-media-sources so that this will build

Also fixes a missing webworkify library that was causing build errors
Closes #558

 sudo: false
 language: node_js
+addons:
+  firefox: "latest"
 node_js:
-  - 'node'
-  - '4.2'
-  - '0.12'
-  - '0.10'
+  - "stable"
 notifications:
   hipchat:
     rooms:

@@ -91,7 +91,7 @@
   "dependencies": {
     "pkcs7": "^0.2.2",
     "video.js": "^5.2.1",
-    "videojs-contrib-media-sources": "^2.4.4",
+    "videojs-contrib-media-sources": "^3.0.0",
     "videojs-swf": "^5.0.0"
   },
   "devDependencies": {
@@ -124,6 +124,7 @@
     "sinon": "1.10.2",
     "uglify-js": "^2.5.0",
     "videojs-standard": "^4.0.0",
-    "watchify": "^3.6.0"
+    "watchify": "^3.6.0",
+    "webworkify": "^1.1.0"
   }
 }

@@ -311,6 +311,10 @@ QUnit.test('starts playing if autoplay is specified', function() {
     type: 'application/vnd.apple.mpegurl'
   });
 
+  // REMOVEME workaround https://github.com/videojs/video.js/issues/2326
+  this.player.tech_.triggerReady();
+  this.clock.tick(1);
+
   // make sure play() is called *after* the media source opens
   this.player.tech_.hls.play = function() {
     plays++;