Small fix in demo App, updated gif example with new features and fixes

SKPhotoBrowserExample/SKPhotoBrowserExample/ViewController.swift

@@ -94,7 +94,8 @@ class ViewController: UIViewController, UICollectionViewDataSource, UICollection
     
     // MARK: - SKPhotoBrowserDelegate
     func didShowPhotoAtIndex(index: Int) {
-        // do some handle if you need
+        collectionView.visibleCells().forEach({$0.hidden = false})
+        collectionView.cellForItemAtIndexPath(NSIndexPath(forItem: index, inSection: 0))?.hidden = true
     }
     
     func willDismissAtPageIndex(index: Int) {
@@ -122,6 +123,10 @@ class ViewController: UIViewController, UICollectionViewDataSource, UICollection
         
         return collectionView.cellForItemAtIndexPath(NSIndexPath(forItem: index, inSection: 0))
     }
+    
+    override func preferredStatusBarStyle() -> UIStatusBarStyle {
+        return .LightContent
+    }
 }