Android port

[dorkster]

This would require #34 and #35.

[dorkster]

Progress is happening in the android branch.

Remaining issues:

• Sounds and music still play when minimized
• Sound sometimes doesn't work when re-launching the app after the first launch

[dorkster]

Android port is working perfectly: https://www.youtube.com/watch?v=KGiXqQaCxWs&feature=youtu.be