title: URL Scheme for App which is not installed
body: <p>Simple question, I'm developing an application that will register its own URL Scheme.  I plan to launch the application using a QRCode via a person's favourite QRCode reader.  </p>
  
  <p><strong>My question:</strong> if my application is not yet installed on their iPhone/iPad, what will happen?  Will they be directed to the App Store to download my app?  Or will it just fail?</p>
  
  <p>I'm not at my Mac right now, otherwise I'd build a test app to launch a URL for an app I know is not installed.  If I get back to my Mac before someone answers, I'll update the question with my results.</p>