Wrote the MarkStoneHandler
Wrote the MarkStoneHandler

This is just a first draft, and is probably full of syntax (and other)
errors.

Mec-iS/game-of-go,davepeck/game-of-go,davepeck/game-of-go,Mec-iS/game-of-go,davepeck/game-of-go,Mec-iS/game-of-go