   var collectionView: UICollectionView!
   let kIntensity = 0.7
   var context: CIContext = CIContext(options: nil)
+  var filters: [CIFilter] = []
   
   override func viewDidLoad() {
     super.viewDidLoad()

    collectionView.registerClass(FilterCell.self, forCellWithReuseIdentifier: "FilterCell")
    
    self.view.addSubview(collectionView)
  }
  
  override func didReceiveMemoryWarning() {

extension FilterViewController: UICollectionViewDataSource {
  
  func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return filters.count
  }
  
  func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("FilterCell", forIndexPath: indexPath) as FilterCell
    //cell.imageView.image = UIImage(named: "Placeholder")
    cell.imageView.image = filteredImageFromImage(thisFeedItem.image, filter: filters[indexPath.row])
    
    return cell
  }
