{"name":"gist: 848721","desc":"How to logout completely from Facebook using Ruby on Rails and Devise + Omniauth. I'm just modifying the Omniauth Railscast http://railscasts.com/episodes/236-omniauth-part-2","actor":"rdetert","url":"https://gist.github.com/848721","snippet":"<div id=\"user_nav\">\n     <% if user_signed_in? %>\n          <img src=\"<%= user_avatar %>\" id=\"main_avatar\"> Signed in as <%= current_user.email %>.<br />","actor_gravatar":"313616579a01934ad59160a0204fbe0e","action":"update"}