【新增】增加支付宝支付功能，方便APP调用。

CoreCms.Net.IServices/Pay/IAliPayServices.cs

@@ -8,6 +8,7 @@
  *        Description: 暂无
  ***********************************************************************/
 
+using System.Threading.Tasks;
 using CoreCms.Net.Model.Entities;
 using CoreCms.Net.Model.ViewModels.UI;
 
@@ -23,6 +24,6 @@ namespace CoreCms.Net.IServices
         /// </summary>
         /// <param name="entity">实体数据</param>
         /// <returns></returns>
-        WebApiCallBack PubPay(CoreCmsBillPayments entity);
+        Task<WebApiCallBack> PubPay(CoreCmsBillPayments entity);
     }
 }