Impelemented Windows support

Fixes #21

-Created VS2013 project/solution for DXBall
-Added extra includes needed to run the game ( I assume VS handles
includes different from clag/g++ )
-Added timing for Windows
-Fixed Linux timing so that it always returns seconds with millisecond
resolution ( this should fix the uneven ball movement )
Merge branch 'master' of https://github.com/olevegard/DXBall

-Merge between last Linux commit and the first Windows commit

Conflicts:
	.gitignore