Merge pull request #2 from georgexzeng/master

got run and deceleration working
Merge pull request #3 from georgexzeng/master

add basic left, right, up input/functionality, commented out leftward de...
began ice friction for steady decelation and stop
Merge pull request #4 from woolly-bear-caterpillars-2014/physics

began ice friction for steady decelation and stop
added ground and ground physics
added ground, add ground physics, world creation, and camera follow
Add procfile.
Merge pull request #5 from woolly-bear-caterpillars-2014/ground

added ground and ground physics
Merge branch 'master' of https://github.com/woolly-bear-caterpillars-2014/polar-bear-panic
increase ground length to width of screen, remove ground scrolling
fix branch merge conflict
Merge pull request #6 from woolly-bear-caterpillars-2014/ground

edit ground width, height
Merge branch 'master' of https://github.com/woolly-bear-caterpillars-2014/polar-bear-panic
modified ninja physics and starting to work on tiles