title: Allowing user to pinch zoom in/out of a webview
body: <p>I have a WebView into which I'm loading a local HTML page with some embedded images.  I want to allow the user to zoom in on the text and image in a similar fashion as they would with the web browser.  </p>
  
  <p>Any ideas how to enable this?</p>
  
  <p>Thanks</p>