title: GCM push notification icon
body: <p>In the official documentation of the GCM <a href="https://developers.google.com/cloud-messaging/concept-options" rel="nofollow">here</a> they mention how to put an icon for a push notification by this Example </p>
  
  <pre><code>{
      "to" : "bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...",
      "notification" : {
        "body" : "great match!",
        "title" : "Portugal vs. Denmark",
        "icon" : "myicon"
      }
    }
  </code></pre>
  
  <p>my question is "myicon" is the name of the icon, where does it exist?
  For example: i have in my project in android studio in drawable "myicon.png"?
  or where is it?
  Please somebody explain and thanks in advance</p>