@kreider1997 @fab9 mocha refactor

Keith and I paired yesterday. Our code is in [his PR](https://github.com/kreider1997/TIY-Assignments/pull/5).

WIP Issue: TheIronYard--Orlando/FEE--2014--FALL#172
Keith's issue: TheIronYard--Orlando/FEE--2014--FALL#164