         let frame = view.bounds
 
         let shelfView = Shelf.View(frame: frame)
-        println(shelfView)
         shelfView.dataSource = self
         shelfView.delegate = self
         shelfView.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: "cell")

    }

    func shelfView(shelfView: Shelf.View, heightForSection section: Int) -> CGFloat {
        return CGFloat(120)
    }

    func shelfView(shelfView: Shelf.View, numberOfItemsInSection section: Int) -> Int {

    }

    func shelfView(shelfView: Shelf.View, widthFotItemAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        switch indexPath.row%2 {
        case 0:
            return 100
        default:
            return 80
        }
    }

}
