adds cart scafold
adds current_cart module and generate scaffold LineItem product:references cart:belongs_to
adds current_cart module and generate scaffold LineItem product:references cart:belongs_to
implemented the cart line item
add quantity column to line items
debug cart
debug cart
handle invalid cart errors
prevent access to other people’s carts
adds empty cart button
adds cart total cell
adding AJAX support to cart
adding AJAX support to cart
completes AJAX support to cart
implements highlithing line on item adding
adds hiding empty cart feature