Undid previous changes to triangle tests to fix error with cornell box
Single axis SAH working on cube, not on others (change #define in
bvh.cpp to try it)
Merge branch 'master' of github.com:nslo/raytracer
SAH with one axis only
Added gitignore for buddha and dragon
Added scenes and changed gitignore
Merge branch 'master' of github.com:nslo/raytracer
Merge branch 'master' into packets

Conflicts:
	raytracer/src/raytracer/geom_utils.cpp
	raytracer/src/raytracer/raytracer.cpp
	raytracer/src/raytracer/raytracer.hpp
	raytracer/src/scene/model.cpp
	raytracer/src/scene/triangle.cpp