Better error reporting when a script file is not found.
Moved game assets to data/ in the .apk file.
Cool rotation effect on cubes.
Added a tool to bundle a game into an apk, and possibly upload and run it on device.

Application specific values are not yet configurable (name, package, icon...), but
any game can be bundled.
Added small helper script to bundle and run the hello sample on android.
Ensure the output directory is created when creating apks.