lib/foursquare2/lists.rb
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
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
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.