title: React Native Linking to web page and push back button
body: <p>I built a react-native app and if user clicks a link then app opens a default web browser and go to the link. </p>
  
  <pre><code>Linking.openURL(notification.link);
  </code></pre>
  
  <p>If user push back button from the android or ios devices, is there any way we can detect the back move?</p>