Added code commentary PDF file.
Added code commentary PDF file.

SaurabhNetra/water,dbindel/water,zejin/water,000Justin000/water,yalcinozhabes/water,toscanosaul/water,zejin/water,toscanosaul/water,kenlimmj/water,yalcinozhabes/water,nimz/water,dbindel/water,toscanosaul/water,zejin/water,toscanosaul/water,dbindel/water,SaurabhNetra/water,rchiodi/lecture,nimz/water,cornell-cs5220-f15/water,SaurabhNetra/water,000Justin000/water,rchiodi/lecture,cornell-cs5220-f15/water,yalcinozhabes/water,nimz/water,kenlimmj/water,cornell-cs5220-f15/water,000Justin000/water,kenlimmj/water