http://kevintsengtw.blogspot.tw/2013/09/aspnet-mvc-autofac.html
http://ericli.no-ip.net/wordpress/index.php/2013/04/17/2-8coding-nopcommerce-plugin-new-project/
NopCommerce技巧: 找@Html.Widget的定義用搜尋solution: “Widget(this HtmlHelper",可以看到是怎麼回傳MvcHtmlString