Fixed Mac bug

This caused the error: "make: *** No rule to make target `sketch_name.ino.cpp', needed by `sketch_name.ino'.  Stop."

Please wait by merging this until I am 100% sure that this solves the issue completely. I will be using it all the time for the next month or so and if I haven't experienced the bug by then, then I would say that it's fixed ;)