Add link to Wiki.

Author: ralf0131

README.md

@@ -6,8 +6,7 @@
 ![license](https://img.shields.io/github/license/alibaba/dubbo.svg)
 ![maven](https://img.shields.io/maven-central/v/com.alibaba/dubbo.svg)
 
-Apache Dubbo (incubating) is a high-performance, java based RPC framework open-sourced by Alibaba. Please visit [dubbo official site ](http://dubbo.incubator.apache.org) for quick start and other information.
-
+Apache Dubbo (incubating) is a high-performance, java based RPC framework open-sourced by Alibaba. Please visit [dubbo official site ](http://dubbo.incubator.apache.org) for quick start and documentations, as well as [Wiki](https://github.com/apache/incubator-dubbo/wiki) for news, FAQ, and release notes.
 
 We are now collecting dubbo user info in order to help us to improve dubbo better, pls. kindly help us by providing yours on [issue#1012: Wanted: who's using dubbo](https://github.com/apache/incubator-dubbo/issues/1012), thanks :)