add images to readme.md and readme_cn.md test=develop (#1883)

* add images to readme.md and readme_cn.md test=develop

* change the image style test=develop

* chage the image style

* chage the image style

* chage the image style

* change image style

* change image style

* change image style test=develop

README.md

@@ -68,4 +68,7 @@ Paddle Lite has referenced the following open-source projects:
 
 - Questions, reports, and suggestions are welcome through Github Issues!
 - Forum: Opinions and questions are welcome at our [PaddlePaddle Forum](https://ai.baidu.com/forum/topic/list/168)！
-- QQ group chat: 696965088
+- WeChat Official Account: PaddlePaddle
+- QQ Group Chat: 696965088
+<p align="center"><img width="200" height="200"  src="https://user-images.githubusercontent.com/45189361/64117959-1969de80-cdc9-11e9-84f7-e1c2849a004c.jpeg"/>&#8194;&#8194;&#8194;&#8194;&#8194;<img width="200" height="200" margin="500" src="https://user-images.githubusercontent.com/45189361/64117844-cb54db00-cdc8-11e9-8c08-24bbe594608e.jpeg"/></p>
+<p align="center">&#8194; WeChat Official Account&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;QQ Group Chat&#8194;&#8194;&#8194;&#8194;&#8194;</p>

README_cn.md

@@ -53,5 +53,10 @@ Paddle Lite 借鉴了以下开源项目：
 
 ##  交流与反馈
 * 欢迎您通过Github Issues来提交问题、报告与建议
+* 微信公众号：飞桨PaddlePaddle
 * QQ群: 696965088 
+
+<p align="center"><img width="200" height="200"  src="https://user-images.githubusercontent.com/45189361/64117959-1969de80-cdc9-11e9-84f7-e1c2849a004c.jpeg"/>&#8194;&#8194;&#8194;&#8194;&#8194;<img width="200" height="200" margin="500" src="https://user-images.githubusercontent.com/45189361/64117844-cb54db00-cdc8-11e9-8c08-24bbe594608e.jpeg"/></p>
+<p align="center">  &#8194;&#8194;&#8194;微信公众号&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;&#8194;官方技术交流QQ群</p>
+
 * 论坛: 欢迎大家在[PaddlePaddle论坛](https://ai.baidu.com/forum/topic/list/168)分享在使用PaddlePaddle中遇到的问题和经验, 营造良好的论坛氛围