title: Add new icon for the push notification in Phonegap
body: <p>I use the <code>phonegap-plugin-push</code> plugin in mine Phonegap app, and I want to set a different icon instead of the used logo app, for the push notification.
  Following the documentations I do it with this code; anyway this not work, it always use the app icon instead of the new one that I want.</p>
  
  <pre><code>var push = PushNotification.init({
      "android": {
          "senderID": "xxx",
          "icon": "ic_stat_icon"
      }
  });
  </code></pre>
  
  <p>I put my <code>ic_stat_icon.png</code> image in the <code>platform/android/res</code> folder</p>