Update README.md

Author: coolsnowwolf

README.md

@@ -134,6 +134,7 @@ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 iKOOLCORE 硬酷R1 多网口小主机 - N5105/N6005 : Cube box, rest fun. 方寸之间，尽享乐趣
 
 (商品介绍页面 - 硬酷科技（支持花呗）)：
+[优惠券链接](https://taoquan.taobao.com/coupon/unify_apply.htm?sellerId=2208215115814&activityId=85fbaf791c4b45e9aaf5ec8e3d1cb2a9)
 [下单链接](https://item.taobao.com/item.htm?ft=t&id=682987219699)
 
 [![r1](doc/r1.jpg)](https://item.taobao.com/item.htm?ft=t&id=682025492099)