Merge pull request #947 from zyearn/update_mail_list

update_mail_list

README.md

@@ -101,5 +101,6 @@ You can use it to:
 # Contribute code
 Please refer to [here](CONTRIBUTING.md).
 
-# Feedback
-Please report bugs, concerns, suggestions by issues, or join QQ-group 498837325 to discuss problems around source code.
+# Feedback and Getting involved
+* Report bugs, ask questions or give suggestions by [Github Issues](https://github.com/apache/incubator-brpc/issues)
+* Subscribe mailing list(dev-subscribe@brpc.apache.org) to get updated with the project

README_cn.md

@@ -103,6 +103,7 @@
 
 请参考[这里](CONTRIBUTING.md#chinese-version)。
 
-# 反馈问题
+# 反馈和参与
 
-bug、修改建议、疑惑都欢迎提在issue中，或加入qq群498837325交流源码方面的问题。
+* bug、疑惑、修改建议都欢迎提在[Github Issues](https://github.com/apache/incubator-brpc/issues)中
+* 订阅邮件列表(dev-subscribe@brpc.apache.org)获得项目最新信息