Merge pull request #722 from alibaba/develop

update README.md for Who is using

README.md

@@ -100,3 +100,54 @@ Contributors are welcomed to join Nacos project. Please check [CONTRIBUTING](./C
 * Join us from wechat. Welcome words: Nacos.
 
 ![cwex](http://acm-public.oss-cn-hangzhou.aliyuncs.com/xuc.png)
+
+
+## Who is using
+
+These are only part of the companies using Nacos, for reference only. If you are using Nacos, please [add your company here](https://github.com/alibaba/nacos/issues/273) to tell us your scenario to make Nacos better.
+
+![Alibaba Group](https://docs.alibabagroup.com/assets2/images/en/global/logo_header.png)
+![虎牙直播](https://a.msstatic.com/huya/main/img/logo.png)
+![ICBC](http://v.icbc.com.cn/userfiles/Resources/ICBC/shouye/images/2017/logo.png)
+![爱奇艺](http://www.iqiyipic.com/common/fix/site-v4/sprite-headLogo-index.png)
+![平安科技](https://img.alicdn.com/tfs/TB1pwi9EwHqK1RjSZJnXXbNLpXa-479-59.png) 
+![华夏信财](https://img.alicdn.com/tfs/TB1MZWSEzDpK1RjSZFrXXa78VXa-269-69.png)
+![优客工场](https://www.urwork.cn/public/images/ui/logo.png)
+![贝壳找房](https://img.alicdn.com/tfs/TB1ebu.EAvoK1RjSZFwXXciCFXa-224-80.png)
+![瑞安农村商业银行](https://img.alicdn.com/tfs/TB1lxu7EBLoK1RjSZFuXXXn0XXa-409-74.png)
+![司法大数据](https://img.alicdn.com/tfs/TB1L16eEzTpK1RjSZKPXXa3UpXa-302-50.png)
+![搜易贷](https://www.souyidai.com/www-style/images/logo.gif)
+![美菜](https://www.meicai.cn/assets/images/new-img/logo.png)
+![松格科技](http://songe.so/images/logo.gif)
+![平行云](https://img.alicdn.com/tfs/TB1OigyDyLaK1RjSZFxXXamPFXa-168-70.png)
+![甘肃紫光](http://www.gsunis.net/V2/image/logo.jpg)
+![海云天](http://www.seaskylight.com/cn/uploadfiles/image/logo.png)
+![集萃智能](http://www.iimt.org.cn/pic/logosy.png)
+![Acmedcare+](https://img.alicdn.com/tfs/TB1DZWSEzDpK1RjSZFrXXa78VXa-240-62.png)
+![吾享](https://w.wuuxiang.com/theme/images/common/logo1.png)
+![北京天合互联信息有限公司](http://14605854.s21i.faiusr.com/4/ABUIABAEGAAg4OvkzwUo8b-qlwUwxQ449gM!300x300.png)
+![上海密尔克卫化工](http://www.mwclg.com/static-resource/front/images/home/img_logo_nav.png)
+![大连新唯](https://www.synwe.com/logo-full.png)
+![立思辰](https://user-images.githubusercontent.com/10215557/51593180-7563af00-1f2c-11e9-95b1-ec2c645d6a0b.png)
+![拓深科技](http://www.tpson.cn/images/new/icon/LOGO_1.png)
+![东家](https://img.alicdn.com/tfs/TB1zWW2EpYqK1RjSZLeXXbXppXa-262-81.png)
+![上海克垚](http://www.sh-guiyao.com/images/logo.jpg)
+![郑州山水](http://www.zzssxx.com/style/images/logo.png)
+![联采科技](http://www.lckjep.com:80//theme/img/logoTop.png)
+![南京28研究所](https://img.alicdn.com/tfs/TB1G216EsbpK1RjSZFyXXX_qFXa-325-53.jpg)
+![联合永道](https://img.alicdn.com/tfs/TB1CRAxDxYaK1RjSZFnXXa80pXa-190-190.jpg)
+![长亮科技](http://www.sunline.cn/Uploads/image/20170724/59759a405c3b2.png)
+![深圳易停车库](http://www.ytparking.com/yiting/images/logo.png)
+![凤凰-汽车](https://img.alicdn.com/tfs/TB1uZa.ErrpK1RjSZTEXXcWAVXa-289-109.jpg)
+![武汉日创科技](http://www.dragonwake.cn/static/css/default/images/logo.png)
+![易管智能](http://ebmsw.mro1598.com/UpLoadFile/MainCompany/20170308-1501-495c-a62f-fc03424f86f1/20170405/20170405-1056-4fe5-90e8-c055f8a1bb23.png)
+![云帐房](http://www.yunzhangfang.com/yzf-pc/img/logo.png)
+![知氏教育](https://www.chyeth.com/622e88980a5d091eaa6449f82d48ca43.png) 
+![中化信息](http://www.sinochem.com/Portals/0/xinlogo.png)
+![海格管家](https://img.alicdn.com/tfs/TB1FNq4EwHqK1RjSZFgXXa7JXXa-232-232.jpg)
+![东莞最佳拍档](https://img.alicdn.com/tfs/TB11ugsDzTpK1RjSZKPXXa3UpXa-300-300.png)
+![chigua](https://img.alicdn.com/tfs/TB1aUe5EpzqK1RjSZSgXXcpAVXa-248-124.png)
+![宅无限](https://img.alicdn.com/tfs/TB1H9O5EAvoK1RjSZFNXXcxMVXa-221-221.jpg)
+![天阙](https://img.alicdn.com/tfs/TB1rNq4EwHqK1RjSZFgXXa7JXXa-200-200.jpg)
+![明源云](https://img.alicdn.com/tfs/TB1.q14ErrpK1RjSZTEXXcWAVXa-219-219.jpg)
+