title: Add image to ToolBarItem
body: <p>How can I add an image to a tool bar item on Android? I've managed to do it for iOS by assigning a new view to the item's <code>CustomView</code> property.</p>
  
  <p>I want text <em>and</em> an image. Not one of the other.</p>
  
  <p>How does one access tool bar items on Android?</p>