Computer Graphics (C SCI 330) Project 6 code

Changed files:
src/Shaders/diffuse_shading.frag
src/Shaders/diffuse_shading.vert
src/main/RenderWidget0.cpp
src/main/RenderWidget0.h
src/re330/SceneManager.cpp
src/re330/Shapes.cpp
src/re330/Shapes.h