React to aspnet/Razor#94.

- Implemented ITagHelperinterface for TagCloudViewComponentTagHelper in the TagHelperSample.

test/WebSites/TagHelpersWebSite/TagHelpers/TagCloudViewComponentTagHelper.cs

@@ -29,6 +29,8 @@ namespace MvcSample.Web.Components
         [Activate]
         public ViewContext ViewContext { get; set; }
 
+        public int Order { get; } = 0;
+
         public async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
         {
             var result = await InvokeAsync(Count);