code: function(route){
      var res;
  
      if(route[0] === '/' && route[route.length-1] === '/' ) {
        res = new RegExp(route.slice(1, route.length-1), '');
        res._isRegexp = true;
      }
      else if(typeof route == 'string'){
        res = Backbone.Router.prototype._routeToRegExp.call(this, route);
        res._isString = true;
      }
  
      return res;
    }
docs: Override routeToRegExp so: - If key is a stringified regexp literal, convert to a regexp object - Else If route is a string, proxy right through