Building RobotPy from git repo

[BotnEyedJoe]

Another distinction to make here is that the documented build process actually builds the FRC_UserProgram executable twice. The first time [inside the Wind River IDE] it builds the Debug version, and the second time [within the 'make' which is done from the shell] it builds a NonDebug version.

Following the README instructions will result in the Debug version being installed on the robot, where the version that is placed into the distribution by make-dist is the NonDebug.