YAML and unit testing for Player and Tournament
YAML and unit testing for Player and Tournament

Player:
-Replace from_dict with	__init__ constructor
-Update	 __repr__ to include mm_score
-Add __eq__ and __ne__ methods
-Add YAML representer/constructor methods
-Add unit tests

Tournament:
-Replace from_dict with __init__ constructor
-Add __eq__ and __ne__ methods
-Add YAML representer/constructor methods
-Add unit tests

massgo/mgamcmahon,hndrewaall/mgamcmahon