title: SimpleModal - closing iframe with close button
body: <p>So I've searched around and I couldn't find a definitive answer.  I want my iframe to have a close button so that users can click it instead of going with the ESC key to close the SimpleModal container.</p>
  
  <p>I've tried several things, but it doesn't seem like anything is being passed into the iframe to be able to close the container.</p>