title: What resolution do I need to make images for universal iOS apps in?
body: <p>I am making a Universal app on xCode 4.4, using Storyboards. I am making the images for this app in Photoshop. I want to make a background image that fills the whole screen.</p>
  
  <p>What I want to know is:</p>
  
  <ol>
  <li>What resolution do I make the images?</li>
  <li>Do I need 1 for iPad and 1 for iPhone, or more?</li>
  <li>How do you make it work with the iPhone 5 as well?</li>
  </ol>