Removed the functionality related to audio features from the project source.
Implemented the 'HealthWidget' class and its associated test cases.  Also added proper assets to support this type.
Added the 'HealthWidget' to the 'GameView' class and updated the tests to support this addition.
fixed merge conflict
Merge pull request #42 from NintenJoe/Task-12.2

Task 12.2 - This looks fine, although the health widget won't do anything until we get the rest of the code merged in.