card now gets drawn from a deck
addded cards for a total of 16 cards
added a match method in PlayingCard
now following lecture 3 slides, cards get assigned only one value
finished lecture 3 slide
finished required task 3: add a last action label
oops :P made no changed
implemented assignment 1 required task 4: add a deal button
finished assignment 1 required task 7: add an image