title: Facebook's news feed navigation bar for React Native
body: <p>I'd like to implement expandable/collapsable navigation + action bars like facebook's feed news does. 
  Any advice on how to proceed?</p>
  
  <p>Currently I'm using GTScrollNavigationBar. I can add it natively but it doesn't update immediately and fails because of </p>
  
  <pre><code>RCTAssert(self.subviews.count == 1, @"we should only have exactly one subview"); 
  </code></pre>
  
  <p>in RCTScrollView.</p>
  
  <p>Removing the assertion makes it work but after rotating everything looks funny, it doesn't play well with react.</p>
  
  <p>Thanks!</p>