Merge pull request #526 from wangkuiyi/fix_readme

Encourage users to file Github issues instead of emails.

README.md

@@ -88,10 +88,8 @@ Both [English Docs](http://paddlepaddle.org/doc/) and [Chinese Docs](http://padd
 - [Source Code Documents](http://paddlepaddle.org/doc/source/) <br>
 
 ## Ask Questions
-Please join the [**gitter chat**](https://gitter.im/PaddlePaddle/Deep_Learning) or send email to
-**paddle-dev@baidu.com** to ask questions and talk about methods and models.
-Framework development discussions and
-bug reports are collected on [Issues](https://github.com/baidu/paddle/issues).
+
+You are welcome to submit questions and bug reports as [Github Issues](https://github.com/baidu/paddle/issues).
 
 ## Copyright and License
 PaddlePaddle is provided under the [Apache-2.0 license](LICENSE).