added turn suggester
once flood fill is build, need a simple function to check which direction to go...
removed the commented-out driveForward() function
Replaced by run which is meant to do more than just drive forward (like calculations!)
put flood fill into the Robot object
added robot_runFloodFill() which uses the flood fill to go in the right direction.  Added number values to the Direction enum to assist in the flood fill direction determination function.
VirtualRobot now runs the flood fill algorithm
used to run right hand rule...