Readme (apache#2449)

* update README

* update README

README.md

@@ -182,12 +182,13 @@ Please follow the [template](https://github.com/apache/incubator-dubbo/issues/ne
 
 Please report security vulnerability to security@dubbo.incubator.apache.org (private mailing list).
 
-## [Ecosystem](https://github.com/dubbo)
+## Dubbo eco system
 
+* [Dubbo Ecosystem Entry](https://github.com/dubbo) - A GitHub group `dubbo` to gather all Dubbo relevant projects not appropriate in [apache](https://github.com/apache) group yet
 * [Dubbo Website](https://github.com/apache/incubator-dubbo-website) - Apache Dubbo (incubating) official website
 * [Dubbo Samples](https://github.com/dubbo/dubbo-samples) - samples for Apache Dubbo (incubating)
 * [Dubbo Spring Boot](https://github.com/apache/incubator-dubbo-spring-boot-project) - Spring Boot Project for Dubbo
-* [Dubbo OPS](https://github.com/apache/incubator-dubbo-ops) - The reference implementation for dubbo ops (dubbo-admin, dubbo-monitor, dubbo-registry-simple, etc.)
+* [Dubbo OPS](https://github.com/apache/incubator-dubbo-ops) - The reference implementation for Dubbo admin
 
 #### Language