Add outlet collection with 12 card buttons
Fix type of controller's deck property
Move drawRandomCard to card button creation time
Merge branch '12cards' into develop
Add card game model class with interface
Add initialisation code for card game model
Implement card flipping and scoring logic
Reorganise SCSPlayingCard methods w/ pragma marks
Implement SCSPlayingCard#match; improved algorithm
Fix bug causing scoring to occur at the wrong time

Scoring should only happen when flipping a card up, not down.
Fix bug where cards would never match
Connect card game controller with model
Grey out matched/unplayable cards
Add score label
Merge branch 'card-game-logic' into develop
Add basic bump_version script

bump_version.sh is a basic script which currently just searches for the
CFBundleShortVersionString key and updates the next line. Currently the
project plist is hard-coded.
Accept new version as command line argument
Don't hard-code plist name in bump_version.sh

Script now searches for all files matching "**/*-Info.plist". If more
than one is found, the user is prompted to select one.
Merge branch 'bump-version-script' into develop
Bump version to 1.0.0