class BoatMatchingGame: UICollectionViewController, UICollectionViewDelegateFlowLayout, UICollectionViewDataSource {

override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
switch indexPath.item {
case 14:
    performSegueWithIdentifier("Quit Matching Game", sender: self)
}

var cellTitle = UILabel()
override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as UICollectionViewCell
cell.contentView.addSubview(cellTitle)
switch indexPath.item {
case 14:
    cellTitle.text = "Press to quit game. Time left: (timerText) seconds"

func startGame() {
    time = 45
    var timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("addTime"), userInfo: nil, repeats: true)
}
func addTime() {
    --time
    timerText = "(time)"
}