Merge pull request #35 from TylerFolsom/master

BOM for fabricated PCBs
Using unique name for C3 LED
IO Pinout for C3 module
Merge pull request #36 from ramechitturi/master

Created new header file for C3 pinout
Signal map for the Trio Board
Merge pull request #37 from ramechitturi/master

Signal map for the Trio Board
Spacing on D0-13 now matches Arduino
Moved ICSP