Migrated to Haxe 3 & OpenFL. Tested with OpenFL 1.0.4 & HaxePunk 2.3.2.

I've just migrated the source code to work with Haxe 3 and OpenFL. It's not a deep migration but it seems to work on my tests.

![captura de pantalla 2013-07-12 a las 18 40 52](https://f.cloud.github.com/assets/722609/789492/eb42e7a4-eb11-11e2-9921-11ca833cc74a.png)