def conn
      Faraday.new(url: url) do |faraday|
        faraday.headers["Content-Type"] = "application/json"
        faraday.request  :url_encoded # form-encode POST params
        faraday.adapter  Faraday.default_adapter # make requests with Net::HTTP
      end
    end
def conn
      Faraday.new(url: url) do |faraday|
        faraday.headers["Content-Type"] = "application/json"
        faraday.request  :url_encoded # form-encode POST params
        faraday.adapter  Faraday.default_adapter # make requests with Net::HTTP
      end
    end
wrapper faraday object with CITA URL and Content-Type

 @return [Faraday]