Added the other cards and did some basic accessibility work on them haven't tested on a device.
Added the outlet for the score label and wired the card buttons to the proper outlet
Created the basic structure of the CardMatchingGame class. I'll make the transition from my HW0 to the lecture notes tomorrow night. Too tired and I don't want to just copy and paste.

Also made the project treat errors like warnings because the class doesn't allow you to submit applications that have errors.