Merge pull request #12 from ljusman/master

AI implementation for level 1 (ALMOST complete....(sigh)......when will this cruelty end??)
Added initization function
Merge pull request #13 from markbahnman/level-initialize

Added initialization function for levels
Fixed bug where player wouldn't move on the ground
Fixed tile collisions and infinite jumping
Merge pull request #14 from markbahnman/y-collision-bug-fix

Collision Bug FIxes
Merge branch 'master' of https://github.com/waylaidwanderer/PyRun