title: setOpacityTo() with <TouchableOpacity> in react-native
body: <p>How to use the method <code>setOpacityTo()</code> with <code>&lt;TouchableOpacity&gt;</code> in react-native ?</p>
  
  <pre><code>setOpacityTo((value: number), (duration: number));
  </code></pre>
  
  <p><a href="https://facebook.github.io/react-native/docs/0.42/touchableopacity.html" rel="nofollow noreferrer">https://facebook.github.io/react-native/docs/0.42/touchableopacity.html</a></p>