Added halfMoveNumber of Game updation from makeMove() and unMakeMove()

fixes #104
Added halfMoveNumber getter and setter
jUnit MakeMoveTest made even better
Version 0.0.10.3 Update
Version History - Version 0.0.10.3 Update
ReadMe Update for App Version 0.0.10.3
Version History - Version 0.0.10.3 Update
Version 0.0.10.3