RandomPlayer, primitive MonteCarloPlayer
refactored
UCB1
tuned UCB1 coefficient
Merge remote-tracking branch 'tomohiko/master'

Conflicts:
	Reversi/pom.xml
	Reversi/src/main/java/Main.java
	Reversi/src/main/java/player/HumanPlayer.java
	Reversi/src/main/java/player/ai/simple/SimpleAI.java