gistfile1.js

 autologin = function(){                                                                                                                            
    var state = Meteor.uuid();                                                                                                                       
    $.get('/_oauth/facebook?close&state=' + state +                                                                                                  
          '&access_token=' +                                                                                                                         
          FB.getAccessToken(), function() {                                                                                                          
            Meteor.call('login', {oauth: {state: state}}, function(e, result) {                                                                      
              Accounts._makeClientLoggedIn(result.id, result.token);                                                                                 
            });                                                                                                                                      
          });                                                                                                                                        
};