docs:新增lin-ui商业案例;更新QQ群信息 (#558)

Author: zhc525349965

README.md

@@ -44,6 +44,11 @@ QQ群号：643205479 <br/>
 
 <img class="QR-img" style="height: 100px; width:100px"  src="https://raw.githubusercontent.com/zhc525349965/fisher_book/master/app/image/公众号.jpg">
 
+## Lin UI商业案例
+微信搜索：风袖 <br/>
+
+<img class="QR-img" style="height: 100px; width:100px"  src="https://raw.githubusercontent.com/zhc525349965/fisher_book/master/app/image/风袖.jpg">
+
 
 ## 快速上手