index.html

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
    <title>Power Editor</title>
  </head>
  <body id="facebook">
    <script type="text/javascript" charset="utf-8">Env = {gk:{}};__DEV__=1;</script>
    <div id="fb-root"></div>
    <script src="//connect.facebook.net/en_US/api/init.js"></script>
    <script src="/app.js" type="text/javascript"></script>
    <script>
      var appId = location.host.match(/localhost/) ? '145628035517241' : '151391901605088';
      FB.init({appId: appId, xfbml: false });
      FB.getLoginStatus(function(response) {
        if (!response.perms) {
          location.href = '/login.html';
        } else {
          App.init(FB.getSession().uid);
        }
      });
    </script>
  </body>
</html>