title: Notify user within app that a new version is available
body: <p>I have an android app in the market and I've noticed that it can take quite a while for the app to be updated when I release a new version. </p>
  
  <p>What I was hoping is something like what Google do with their Google Chrome app (may only be the beta version that does it not sure). </p>
  
  <p>What I want to do is when the user launches my app, it can do a check to see if there is a new version available, and if so, just display a small message at the bottom to inform the user that there is a new version available for download. If they click it then the user will be taken straight to the app within the play store so they can commence the update. </p>
  
  <p>How is this done? I've not managed to find anything for android, I've found a couple of things relating to iOS but obviously no good to me.</p>
  
  <p>Thanks for any help you can provide.</p>