code: def update_list(list_id, options={})
        response = connection.post do |req|
          req.url "lists/#{list_id}/update", options
        end
          return_error_or_body(response, response.body.response.list)
      end
docs: Update a list: https://developer.foursquare.com/docs/lists/update
  
   @param [String] list_id - The id of the list to update
   @param [Hash] options
   @option options String :name - The name of the list
   @option options String :description - The description of the list.
   @option options Boolean :collaborative - Boolean indicating if this list can be edited by friends.
   @option options String :photoId - The id of a photo that should be set as the list photo.