title: Managing Heroku Multiple environments with existing app
body: <p>I've got an app, that has 'heroku' configured as a remote, to one application.<br>
  Let's call this app 'MyAppDev'</p>
  
  <p>However, I have another app, called 'MyAppLive'<br>
  I want to configure deployment like this:</p>
  
  <blockquote>
    <p>git push staging<br>
    push to MyAppDev</p>
    
    <p>git push production<br>
    push to MyAppLive</p>
  </blockquote>
  
  <p>How can I do this?</p>
  
  <p>Also, what about environment variables?<br>
  Both apps have MongoLab, so I'd like the MyAppDev app to use it's own db....</p>