Added Mobile Support With Touch Screen Controls

I've added mobile support with touch controls and controller support to the web version, as well as an Android apk. 

It feels pretty good to me as it is right now, especially good enough for anyone to try and give me feedback.

The game's controls were built originally with only keyboard and mouse in mind, so of course it plays better with those controls, however I think the implementation I have now is serviceable. I played it for a bit, and I could see someone getting really good at using them. 

The android apk version seems to run as well as the desktop versions, from my limited testing.