title: How to download to /res/raw using cordova-plugin-file
body: <p>I'm using cordova to create a push application.  I'm trying to download a 20 second mp3 file and have that file play whenever the notification is received.  Android docs say it needs to be stored in <code>/res/raw</code> (see <a href="https://developers.google.com/cloud-messaging/http-server-ref" rel="nofollow">https://developers.google.com/cloud-messaging/http-server-ref</a>).  I'm using a cordova file download plugin: <a href="https://github.com/apache/cordova-plugin-file" rel="nofollow">https://github.com/apache/cordova-plugin-file</a>.  This plugin gives several locations preconfigured, but nowhere on the page does it even mention a /res folder.   If i try to download to <code>/res/raw</code> I get an error.</p>
  
  <p>This is made even worse by the fact that when I plug in my android device into my computer, I can't even see all the files on there.  I can't even see the APK for my app.</p>
  
  <p>But back to the main question, using the cordova-plugin-file, how do I download a custom sound to <code>/res/raw</code> for use in a custom push notification?  I already can download the file just fine, I'm just having trouble specifying <code>/res/raw</code> as the endpoint.</p>
  
  <p>Thanks!</p>