Fixed comment about gravitational pull.
Fixed code indentation.
Removed FRAME_DIM, switched to an OOP method.
Removed FRAME_DIM, switched to doing in an OOP way.
Modified the code so that player can get the screen dimensions in an OOP
way instead of using a global variable.
Merge branch 'master' of
https://github.com/MackProgramming/SideScroller.git

Conflicts:
	bin/core/Screen.class