v0.0.2 Build+Tool Changes

[ashes999]

• Switch over to mrubymix. For desktop, we've solved how to unify syntax.
• Consider getting rid of mrubymix, if we're not using mruby
• Switch over to require keyword instead of #= require. We need to do our own aggregation again, like mrubymix does.
• Release build removes comments and blank lines, maybe whitespace
• Android: true asynchronous asset loading
• Android: try to use Ruboto's repack instead of rebuilding the whole APK
• if rake (for Android) fails, fail the build
• Travis-CI Android integration
• release builds Android APKs in release mode