title: How can i use older version of google play services?
body: <p>I'm using Google Cloud messaging through google play services. The things is it only works on the devices with last version of play services installed, in remaining devices i need to show a dialog to send user to google play to install new version witch i really don't want to do! 
  <p>
  So how can i avoid this?! I'm trying to use an older version of play services (lets say from 2 years ago) to insure majority of my users don't need to update but it seems impossible with grade and android sdk since it already deleted older versions! So what should i do? Is there any way to use older versions?! and if do find a way to use an older version are newer versions compatible with older one?
  <p>
  I don't want to force my users to update because </p>
  
  <ul>
  <li><p>GCM it's not essential to my app although i like to have it!</p></li>
  <li><p>It's over 30 MB witch is a lot in  third world countries were my users are.</p></li>
  <li>Google play blocks some of my users from accessing google play due to international lows! and i have to do update manually my self!</li>
  </ul>