title: Convert project from old version of xcode to newer version
body: <p>Up front: I am new to app development. I am working with xcode 4.6.3, since that is what my older MacBook allows (iOS 10.7.5).</p>
  
  <p>I hope to build an app using 4.6.3, and then in the future (when I can afford to) purchase a new system that will allow me to use the latest (whatever iteration it will then be) xcode. </p>
  
  <p>My question: Is it possible to create an app using an early version of xcode and to later convert to what will be the current version? I realize this suggests a "yes" or "no" answer, but a little more information would be useful.</p>
  
  <p>Thank you,
  David</p>