Merge pull request #14 from CodebyteStudios/Cameron

Cameron
Merge pull request #15 from CodebyteStudios/Cameron

Using GLEW again, texture loading is now done with lodepng(only supports...
Merge pull request #16 from CodebyteStudios/Cameron

Added Bullet Physics and added license to code
Merge pull request #17 from CodebyteStudios/Cameron

Cameron
Merge pull request #18 from CodebyteStudios/Cameron

Cameron
Merge pull request #19 from CodebyteStudios/Cameron

Cameron
Fixed physics bug in Scene.cpp, need to fix timestep between different machines