getFlipsForPosition implemented in OthelloComputerHardPlayer

The OthelloComputerHardPlayer should now be complete. I have not tested
it. If my logic is right, the getFlipsForPosition should now output the
total number of flips when given an x and y coordinate and a board.
This should probably be tested though.
Merge branch 'master' of https://github.com/jbrookdale/GroupAGSAssignment5

Conflicts:
	OthelloHardComputerPlayer.java
OthelloHardComputerPlayer

Tidied up and implemented testing which shows up some bugs. Fixing now.