Convert parseTTML parser tests to be async [#231]

parsers/parserTTML/popcorn.parserTTML.unit.js

@@ -1,4 +1,4 @@
-test( "Popcorn 0.3 TTML Parser Plugin", function () {
+asyncTest( "Popcorn 0.3 TTML Parser Plugin", function () {
   var count = 0,
       numSubs = 0,
       sub,
@@ -73,13 +73,8 @@ test( "Popcorn 0.3 TTML Parser Plugin", function () {
     }
   }
   
-  poppercorn.parseTTML( "data/unit.ttml" );
-  
-  expect( expects );
-  stop( 5000 );
-  
-  // Allow load time
-  setTimeout( function () {
+  poppercorn.parseTTML( "data/unit.ttml", function(){
+
     Popcorn.forEach( poppercorn.getTrackEvents(), function( evt ) {
       if( evt._natives.type === "subtitle" ) {
         sub = subs[ numSubs++ ];
@@ -98,6 +93,8 @@ test( "Popcorn 0.3 TTML Parser Plugin", function () {
     strictEqual( subs.length, numSubs, "Parsed all subtitles" );
     plus();
 
-  }, 500);
+  });
+
+  expect( expects );
   
 });