def payments_list
      get('payments')
      @response.success? ? @response.body[:payments].map { |payment| Instamojo::Payment.new payment, self } : @response
    end
def payments_list
      get('payments')
      @response.success? ? @response.body[:payments].map { |payment| Instamojo::Payment.new payment, self } : @response
    end
GET /payments