title: Generating a non-IAP receipt in sandbox
body: <p>I'm trying to generate a receipt for validation for an app's <em>purchase</em>. This is <em>not</em> an in-app purchase receipt, rather a receipt that reflects the download itself.
  My assumptions is that <code>SKReceiptRefreshRequest</code> generates this receipt when running from Xcode.
  But it seems using sandbox credentials fails to generate the receipt.</p>
  
  <p>Am I right about my assumption? if I am, how do I generate such as receipt in sandbox environment?</p>