Lots of changes:

- Start working on a CLI framework
- Update Commands & Readme docs
- Note on the Eagle file that we need to cut the VUSB/VIN pads apart
- Re-organize some header files
- general cleanup
Merge branch 'master' of github.com:synfinatic/teensy-dsc

Conflicts:
	src/teensy_dsc/cli.cpp
	src/teensy_dsc/cli.h