text: /**
   * Ensure that no user is logged in before proceeding to next route middleware.
   *
   * This middleware ensures that no user is logged in.  If a request is received
   * that is authenticated, the request will be redirected to another page (by
   * default to `/`).
   *
   * Options:
   *   - `redirectTo`   URL to redirect to in logged in, defaults to _/_
   *
   * Examples:
   *
   *     app.get('/login',
   *       ensureLoggedOut(),
   *       function(req, res) { ... });
   *
   *     app.get('/login',
   *       ensureLoggedOut('/home'),
   *       function(req, res) { ... });
   *
   *     app.get('/login',
   *       ensureLoggedOut({ redirectTo: '/home' }),
   *       function(req, res) { ... });
   *
   * @param {Object} options
   * @return {Function}
   * @api public
   */
  module.exports = function ensureLoggedOut(options) {
    if (typeof options == 'string') {
      options = { redirectTo: options }
    }
    options = options || {};
    
    var url = options.redirectTo || '/';
    
    return function(req, res, next) {
      if (req.isAuthenticated && req.isAuthenticated()) {
        return res.redirect(url);
      }
      next();
    }
  }
  