refactored and fixed collision (mostly)

Still weird when you press against the bump and jump. Also, falling of
the bump is maybe weird?
Mostly fixed previous bug

But now jumping against the bump just right can kill all your upwards
momentum once you reach the top of the bump.
playing around, nbd
Added Player class. Nothing in it
Partial Player and TileMap classes added
Filled out TileMap class
filled out more TileMap and Player

Need to complete Player.h and fully implement in MyScene.m
BROKE IT ALL
Revert "playing around, nbd"

This reverts commit 65a3de5fe9c3fde5d90d3d01d186c726f5770235.

Conflicts:
	Rewind/MyScene.m
Revert 65a3de5..bfbaac2

This rolls back to commit 65a3de5fe9c3fde5d90d3d01d186c726f5770235.
Implemented Player and TileMap classes
Cleaned up the MyScene
Starting to implement camera
Made touch controls more responsive. Dunno what's wrong with camera so it's commented out
Camera now scrolls!
My world has become SO MUCH BIGGER
cleaned up MyScene
tweaking platformer physics
tried to fix corner bug, didn't work
Fixed corner bug, made jumps more floaty