Added primitive shapes

Added the primitive shapes as OBJ files, made using Blender
(blender.org)
Mesh.draw()

Added draw function to the Mesh class
Beginning to PerspectiveTest class

Added some begin things
Moved GL stuff

Moves some common GL functions from Game to a RenderUtil class
Removed old Mesh class

Removed the old Mesh class
Added comments

Added some comments to the Mesh.draw() function