title: Downloading normal image Vs retina device image (2x)
body: <p>When we need to download an image from some URL and show it on two kinds of devices -- Retina (with 2x image) and regular device -- Should we have two different image URLs to handle this?</p>
  
  <p>For the images in the resource bundle we are keeping both xyz.png and xyz@2x.png and its working fine.</p>
  
  <p>For images we are fetching from server do we need to have separate image URLs for both these kind of images and cache them locally with the same naming convention (xyz.png and xyz@2x.png)?</p>
  
  <p>Please throw some light here.</p>