Merge pull request #225 from sparkfun/pcUpdates Update README - add installation and usage instructions

Merge pull request #73 from sparkfun/nsUpdates Add 2.2M, 3.3V regulator, 12pF, 20pF, 32kHz xtal. Fix castellated pads

Merge pull request #48 from sparkfun/nsUpdates Ns updates

Version 0.5 

Version 0.3 

Version 2 

Version 0.1