title: Dynamic callback URL in Simpleauth
body: <p>I cant figure out how to specify a dynamic callback url using Simpleauth (<a href="https://github.com/crhym3/simpleauth" rel="nofollow">https://github.com/crhym3/simpleauth</a>) </p>
  
  <p>I would like to redirect user to whatever page that they were on prior to clicking on Login.</p>
  
  <p>Can anyone help ?</p>