Add playlist loader to dist and example

Get the example page working by including the playlist-loader.js and update the concatenated js produced by grunt.

@@ -30,7 +30,8 @@ module.exports = function(grunt) {
               'src/aac-stream.js',
               'src/segment-parser.js',
               'src/stream.js',
-              'src/m3u8/m3u8-parser.js'
+              'src/m3u8/m3u8-parser.js',
+              'src/playlist-loader.js'
             ],
         dest: 'dist/videojs.hls.js'
       }

@@ -25,6 +25,7 @@
   <!-- m3u8 handling -->
   <script src="src/stream.js"></script>
   <script src="src/m3u8/m3u8-parser.js"></script>
+  <script src="src/playlist-loader.js"></script>
   
   <!-- example MPEG2-TS segments -->
   <!-- bipbop -->