add counter for incorrect guesses
add 2 hints for level 1
set max number of touches to 1 for answer labels
adding answers to level 3
added 3rd level
fixed wording on hint for level 3
fix some text display issues in the levels
fix removing labels from superview twice
add variable for max level, loops back around to level 1 when reached
add level 4
add 4th level, but with performance bug
trying to add a dirty fix to performance issue
complete level 4
add placeholder for feedback image
add a feedback image for practice mode
modify level 2 to be a bit more challenging...
remove debug code
set answer labels to same colors as in tutorials
remove test code
Merge branch 'master' into practice-mode5