Added function to insert moves into board

Sorry to mess with master branch, changes pretty minimal though; figured
I was just messing around and wouldn't make actual progress. Will branch
out in future.
Merge branch 'master' of https://github.com/optemino/Hex into RunGame

Conflicts:
	hs/hex.hs
- Running Hex game
- Switches between 2 players and updates boards with moves