Merge pull request #3 from HalfVoxel/master

Added background effects

Merge pull request #1 from HalfVoxel/master

Added simple touch commands

Better color distinction of powerups

You now see yourself after death

Added maps

Fixed food render offset and powerup probabilities

Fixed crash on cutoff powerup

Readme

Powerup changes

Added edge wrapping and lowered initial speed

Modified powerup probabilities and effects

Added high score

More reasonable food frenzy probability