title: X-Frame-Option DENY error when AAD sign-in in office add-in
body: <p>I'm working on build Office add-in with Adal.js for AAD integration. And my add-in requires some permissions.   </p>
  
  <p>When I open add-in in OneNote and try to call login from adal.js, it request login.microsoftonline.com and gives X-Frame-Option Deny error.<br>
  I think it's because office add-in running in iFrame, how can I workaround this?</p>
  
  <pre><code>login.microsoftonline.com/common/oauth2/authorize?response_type=id_token&amp;cl…nt-SKU=Js&amp;x-client-Ver=1.0.13&amp;nonce=ced03385-f1ca-4206-bb23-6c3e8338a0d2:1 Refused to display 'https://login.microsoftonline.com/common/oauth2/authorize?response_type=id_…ient-SKU=Js&amp;x-client-Ver=1.0.13&amp;nonce=ced03385-f1ca-4206-bb23-6c3e8338a0d2' in a frame because it set 'X-Frame-Options' to 'DENY'.
  </code></pre>