title: Update badge icon
body: <p>i try to update badge icon, every time when when the app (in background)receive a push notification.</p>
  
  <p>i used that in "didReceiveRemoteNotification" and "didFinishLaunchingWithOptions"</p>
  
  <pre><code>[UIApplication sharedApplication].applicationIconBadgeNumber++;
  </code></pre>
  
  <p>If the app is in foreground and receive few push notifications, when the app come back in backgorund the icon's badge is updated with the number of push notifications received.</p>
  
  <p>But if the app is in background the icon's badge is allways 1 like in payload even the app receive many notifications.</p>
  
  <p>Do you have some ideas? Thanks in advance </p>