def rename(new_name)
      json_body = { :name => new_name }.to_json
      HTTParty.put(base_request_uri, :body => json_body)
      @name = new_name
    end
def rename(new_name)
      json_body = { :name => new_name }.to_json
      HTTParty.put(base_request_uri, :body => json_body)
      @name = new_name
    end
change the name of the light