Put playerPairCheck() in Dice class and roll() now returns a String.
Added more server code to the GameManager and Player classes so that
they now connect and can converse with each other. 
Commented out the GameManagerProtocol class and moved its logic to
GameManager as it can all be done there and makes things easier.
Moved the move() method back to TempMarker but it still has no logic.

Signed-off-by: Jeremy Magee <jdmagee93@gmail.com>