title: Making an app Retina Display friendly
body: <p>I have an app and would like to make it retina display friendly.</p>
  
  <p>How exactly does the process work? What images need to be added apart from what I have?</p>
  
  <p>I know the sizes should be different, but am not sure on the details?</p>
  
  <p>What else needs to be done to handle retina display?</p>
  
  <p>Should the device be detected and use other images if the device supports retina display?</p>
  
  <p>What if there are a lot of images? And how will this effect the app size?</p>
  
  <p>Thanks</p>