Cleaning up and testing MIDI Routing Switch

Cleaning up old stuff and testing MIDI Routing Switch
Successfully acquired MIDI Data

Note On; Note Off and CC
Added comments; refined testing method

Added a crap-ton of comments; heavily refined blinkTest function; Added
SOS message on startup; added different blink messages for each MIDI
Command message
Merge branch 'MIDIRoutingTest' into Gopal's-super-special-sauce---silver-edition-(w/free-serial-pins)