title: Logout user with services not working
body: <p>I am working on a mobile app which I will be deploying using Phonegap. </p>
  
  <p>Now I am able to login using Drupal 7 services and I am also getting the session name and session id. But I am not able to Logout the user. When even I am doing that.. I see this issue on my chrome console: 406 (Not Acceptable:) </p>
  
  <p>I tried sending headers as "Cookie" then "sessionname=sessionid" format.. but that didn't work. Can someone please suggest a way. </p>