Added Title Screen and game now start on Title Screen and progresses to
Main Menu with a mouse click
Merge remote-tracking branch 'origin/master'
test
Added Race class

Added a race class and a scene transition from main to race
Indentation and Added buttons

Fixed indentations (spaces instead of tabs) in MainScreen, Options.
Added/fixed button to go from MainScreen to Race.
Merge branch 'master' into Jason-Branch2