Added NFL teams color set. Removed color-convert module depenedency (which used native forEach) by adding rgb2hsl to util. Added no-same-colour check to incorrectChoice selection.
Updated nav with new game. Changed appearance of social links. Marked current game set.
Added mlb-teams set. Included it in the menu.
Added nba-teams set. Not included in the menu yet.
Changed meta description to reflect new game sets.