title: Cloudfront Invalidation for custom origin root
body: <p>Anyone know how to invalidate the root document of a custom origin that use's friendly url's?</p>
  
  <p>eg: <code>example.com</code> ?</p>
  
  <p>What would be the correct Object Path to request via the AWS Create Invalidation dialog? </p>
  
  <p>The documentation only refers to actual files eg: <code>images/image1.jpg</code>, and where it does mention folders there are never the root only <code>images/</code> etc.</p>