-added steam achievements
-Added "AI Mode" - activate with "a" and AI will take over your play calling.
-fixed card "Shed Block" sticking around unless there is a opponent card to nullify.
-fixed card "1st down machine" to fire off if you get a 1st down with it up.
-fixed resume from saved game not initializing trigger card graphics right in all cases
-fixed defensive "add STAT" to yards.
-Fixed interception/fumble bars from not moving to the right location in response to cards.
-Made the smartest AI level less predictable.