Initial commit
Initital test case for MarsRover
Initial getGrid test added
Refactored test and getGrid implementation
Added test for negative grid column count
Implemented check for grid column count
Added test for negative grid row count
Implemented check for grid row count
Added test for non zero grid column count
Added check for non zero grid column count
Added test for non zero grid row count
Added check for non zero grid row count
Refactored grid into a class
Moved grid tests into a separate class
Added test for starting point
Implemented getStartingPoint
Refactored getStartingPoint
Added test for non default starting point
Added test for non negative x starting point
Added check for non negative x starting point