title: How would you implement pinch-zoom in react-native?
body: <p>I've been looking into PanResponder. My current working hypothesis is that I would detect if there are two touches that are moving outwards and if so, increase the element size in the <code>onPanResponderMove</code> function.</p>
  
  <p>This seems like a messy way to do it. Is there a smoother way?</p>