update create.sql
move serviceTest to serviceTest package
add find_item_by_id_test
update Item class
add DatabaseUtil Class
complete DatabaseUtil Class
add setPromotionList Method
update Item Class
update pom.xml
update ItemDao Class
update ItemService Class
update ItemServiceTest
update Item Class
add find_items_test
success find_items_test
add get_promotions_by_item_id_test
add getItemPromotionList method
success get_promotions_by_id_test
add get_item_by_barcode_test
update test name