Very small rayTracing-ness. Added files to support.
updated the ray casting to work with the new cube.
Merge branch 'master' of https://github.com/claytonsandham/GraphicsFinalProject

Conflicts:
	CRS Program 4/OpenGL demo/HalfEdge.cpp
	CRS Program 4/OpenGL demo/Mesh.cpp
	CRS Program 4/OpenGL demo/OpenGL demo.vcxproj.user
	CRS Program 4/OpenGL demo/scene2.txt