The makefile assumes that Unity is in a folder directly adjacent to this repo.
Find the Unity code at git://github.com/ThrowTheSwitch/Unity.git
I used SHA 5ad372b6b38d7e717c1c01ebe4c0299a98b2dc40
I plan on redoing this whole thing shortly, practice practice practice!
"It is not the conclusion of the kata that matters, it is the steps that lead to the conclusion."