Added a details view controller for later demo / debugging purposes.
Factored out generation of animation frames.
Now respecting the navigationBarHidden property.
Updating blur layer frame by updating the bounds frame
Removed useless autoresizing mask and added explicitly non-clipping bounds.
Longer presentation duration.
Now letting reappear the UINavigationBar.
Now listening to a notification from UINavigationController allowing to adjust height when the UINavigationController is pushing or popping views.
Updated podspec to 0.3.4.