Add Bullet initializers
Add falling cube
fix linux makefile for bullet
Merge branch 'master' into physics

Conflicts:
	main.cpp
Merge branch 'physics' of https://github.com/Frogging101/ZombieClient into physics
Room now has collision! Warning: Code is messy.
Merge branch 'master' into physics
Attempt to fix lighting; still broken
Fix lighting by making room not cast shadows
Fix retarded mistakes; physics now work correctly
change to proper shadow technique
Fix physics and shadow technique
Merge branch 'physics' of https://github.com/Frogging101/ZombieClient into physics
Clean up physics code, ready to be merged back
Merge branch 'physics'

Conflicts:
	main.cpp
Add lib directory and libs