Tomorrow the A train will become a breast-feeding caravan. To promote breast-feeding mother's rights, state Sen. Liz Krueger (D-Manhattan) and a bunch of nursing mothers will hop on the A train at 59th Street just in time for lunch. The noon ride will end in Brooklyn at the Brooklyn Alliance for Breastfeeding Empowerment fair on Fulton Street near New York Avenue. Krueger, who penned the Breastfeeding Mothers' Bill of Rights, said in a written statement that mothers are still harrassed for feeding their babies in pubilc places.