Fix build script

When pull request #215 (heff/jhurliman-youtube) was merged it seems to have broke
the build script (build.sh). There is two issues this resolves:

1. video-js.swf was moved under tech and not updated in the build
2. html5.js does not have a leading linebreak in the file. When this file
is concat'ed on it results in a javascript error.

```
// _V_.Cue = _V_.Component.extend({
//   init: function(player, options){
//     this._super(player, options);
//   }
// });/* HTML5 Playback Technology - Wrapper for HTML5 Media API
================================================================================ */
```