changed name of IBasketService to IBasketViewModelService in order to match file name (#143)

src/Web/Interfaces/IBasketViewModelService.cs

@@ -0,0 +1,10 @@
+using Microsoft.eShopWeb.Web.ViewModels;
+using System.Threading.Tasks;
+
+namespace Microsoft.eShopWeb.Web.Interfaces
+{
+    public interface IBasketViewModelService
+    {
+        Task<BasketViewModel> GetOrCreateBasketForUser(string userName);
+    }
+}