Merge pull request #1 from SquadCollaborativeRobotics/Alex

Demonstrated live successfully.
Merge branch 'motor_control' of https://github.com/SquadCollaborativeRobotics/ArduinoCode into motor_control

I NEEDZ DA CODE
Merge branch 'motor_control' of https://github.com/SquadCollaborativeRobotics/ArduinoCode into motor_control
Added PID library and skeleton code.  Compiles, but need to test.