*added libraries
*added first characterization game test with single user play.
*42% coverage
testing user wrong answer
coverage 48%
*testing user not leaving penalty box
*coverage 53%
* testing user leaves penalty box
* coverage 62%
* testing right answer when not in penalty box
* coverage 71%
* testing user right answer when getting out of penalty box
* coverage 79%
* refactor. deleting singleton
* coverage 80%
* testing right answer not getting out of penalty box
* coverage 82 %
*refactoring, deleting isPlayable unused method.
*coverage 83%
fix bug: game should allow a sixth player
refactoring new funcionality sixth player to new GameTest class
added new functionality. Allowing user to leave the current game.