title: Add icon for App Store (required for all apps) to Xcode
body: <p>I am preparing to submit my application to the Apple App Store and have been researching the requirements for the App Icon. I have filled in all of the allotted slots shown in this picture from Apple's website <img src="https://i.stack.imgur.com/xHPhp.png" alt="enter image description here"></p>
  
  <p>However <a href="https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html" rel="nofollow noreferrer">the docs say that a 1024x1024 icon is required for the App Store</a> and I do not see any "slot" for that image in my Xcode project. Where and how do I add that required 1024 x 1024 app icon?</p>