title: How to change app's platform from Windows 8.1 to 8?
body: <p>I create my game-application for Windows 8.1 and upload it to Windows Store (<a href="http://apps.microsoft.com/windows/app/pentominoes/9cf45ae4-630e-44ce-bb1d-1cb90e907816" rel="nofollow">link</a>), but it's only for 8.1. I created it in VS'13. Help me, please. How I can change platform of project in VS'13 from 8.1 to 8?</p>