Initial Commit
Tennis game creates new players and sets their opponents to each other.  Testing for score updating, tests fail.
Testing score strings passes for scores up to 'forty'.  Need to implement tests and solutions for duece, ad, and winning.
Added test for a player getting a 4th point when his opponent has less than 3 points. Test passes.  ex: 40:15 => Winner.
Added test to check that the player has to win by two points.  Test fails.
Test to check for ad-in passes.  Need to create test for checking ad-out status.
Created tests for ad-out, tests pass.  Need to create test and implement 'deuce' situation.
Created test for deuce, passes test. Need to create method for Game to report scores.
Created test for Game instance to report overall score for the game.
Tests for overall game score pass.  Code complete for scoring a game.  Set and Match not implemented.