Cart Updates (#26)

* ardalis/cart-updates

Updating how items are added to cart and displayed in cart.

* Cleaning up UI

src/ApplicationCore/Interfaces/IBasketService.cs

@@ -8,6 +8,8 @@ namespace ApplicationCore.Interfaces
         Task<Basket> GetBasket(string basketId);
         Task<Basket> CreateBasket();
         Task<Basket> CreateBasketForUser(string userId);
-        Task UpdateBasket(Basket basket);
+
+        Task AddItemToBasket(Basket basket, int productId, int quantity);
+        //Task UpdateBasket(Basket basket);
     }
 }