def add_route(route)
      raise InvalidRouteError.new('Route must respond to #url_for') unless valid_route?(route)
      @routes << route unless route_exists?(route)
    end
def add_route(route)
      raise InvalidRouteError.new('Route must respond to #url_for') unless valid_route?(route)
      @routes << route unless route_exists?(route)
    end
Add a new route to the Routes collection

 @return [Array] Routes collection