removed non-required code; added some comments
removed non-required code; added some comments

AMOS-ss16-proj3/amos-ss16-proj3,AMOS-ss16-proj3/amos-ss16-proj3,AMOS-ss16-proj3/amos-ss16-proj3,AMOS-ss16-proj3/amos-ss16-proj3,AMOS-ss16-proj3/amos-ss16-proj3