Merge pull request #1 from rtetsoacrsf/master

Changed background colour to black.
Fixed aspect ratio.

Using glOrtho instead of glFrustum.
Changed player list to array.
Added simple mouse control.
Made escape key quite program.
Removed left right keyboard control.
Added movement type to player.
Moved player updating to player class.
Changed forward backward controls to w and s.
Properly formated else if statement.
Changed player movement system in preparation for sideways movements.
Added left right controls.