Extracted set_direction private class
Merge branch 'master' of github.com:antoneri/rover-onesheeld
Privatized Robot::speed and changed signature of the Robot::turn_left/..etc methods
Added TODO
Implemented Robot:run()
Changed set_direction() to direction()
Extracted setup()
Made turn_left etc... private methods
Merge pull request #3 from antoneri/master

Merge pull request #3 from antoneri/master