add known users

README.md

@@ -373,6 +373,9 @@ The project is licensed under the [Apache 2 license](https://github.com/ctripcor
 ![妙知旅](https://raw.githubusercontent.com/ctripcorp/apollo-community/master/images/known-users/mojory.png) 
 ![程多多](https://raw.githubusercontent.com/ctripcorp/apollo-community/master/images/known-users/chengduoduo.png) 
 ![上汽通用五菱](https://raw.githubusercontent.com/ctripcorp/apollo-community/master/images/known-users/baojunev.png) 
+![乐言科技](https://raw.githubusercontent.com/ctripcorp/apollo-community/master/images/known-users/leyan.png) 
+![樊登读书](https://raw.githubusercontent.com/ctripcorp/apollo-community/master/images/known-users/dushu.png) 
+![找一找教程网](https://raw.githubusercontent.com/ctripcorp/apollo-community/master/images/known-users/zyiz.png) 
 
 # Awards