def find_card
      @client.remove_cards
      card = PayuLatam::Card.new(@client) # info de payu
      card.load( PayuCard.find(@selected_card).token )
      @client.add_card({token: card.resource['token']})
    end
def find_card
      @client.remove_cards
      card = PayuLatam::Card.new(@client) # info de payu
      card.load( PayuCard.find(@selected_card).token )
      @client.add_card({token: card.resource['token']})
    end
busca la info de una tarjeta de payu