cs248-08
3 different examples are provided.
some of the files are modified from other sources as listed in the files.

opengl.cpp	some opengl code within a glut framework. shape drawing, lighting, keyboard functionality
		this was the example file went over during the review section.
sdl.cpp		some opengl code within an sdl framework. code for texturing also included.
glsl.cpp	basic glsl shader example of cel shading.