title: Use Material Icons in XML
body: <p>I want to use the new material icons provided by Google. I find it a bit cumbersome to download each icon individually. 
  Is there a way to do something like: </p>
  
  <pre><code>&lt;ImageButton
    android:src="@android:Icon.Material.IconName"
    .../&gt;
  </code></pre>
  
  <p>If not, whats the easiest way to include multiple icons in my project? 
  Cheers. </p>