add client init & update .gitignore
add client views & scripts
add app
update web.xml & mvc-dispatcher-servlet.xml
delete useless code
delete useless file
recover app
fix Controller
update item.html
update item.html
update url
fix old name
fix old code
fix url
fix old code of Cart.html
add addToCart Method
change ItemService to CartService
fix showCartList Method
update PUT Method
rename getItem to findItem