Added Position class with the intention of representing coords and direction
Replaced references to Point with Position in Rover and RoverTest
Several items, including adding Position and removing System.Drawing refs
Added Orientation and Direction enums and fixed missing type on Rotate
Moved RoverTest into Tests dir
Removed values from enums in Position - don't need them yet
First test for Position
Enough faffing around with VS Express - testing just phayles