Update README.md

Author: Trinea

README.md

@@ -1,9 +1,11 @@
 Android开源项目分类汇总
 ====================
+> 如果你也对开源实现库的原理感兴趣，欢迎 Star 和 Fork [Android优秀开源项目实现原理解析](https://github.com/android-cn/android-open-project-analysis)  
+> 欢迎加入 QQ 交流群：377723625 (入群理由填写群简介问题答案)  
 
 欢迎大家推荐好的Android开源项目，可直接[Commit](https://github.com/Trinea/android-open-project/wiki "请遵守<内容添加及编辑规范>")，欢迎`Star`、`Fork` :)  
 
-交流QQ群：377723625&nbsp;&nbsp;&nbsp;&nbsp;微博：[Trinea](https://weibo.com/trinea)&nbsp;&nbsp;&nbsp;&nbsp;主页：[www.trinea.cn](http://www.trinea.cn/)  
+微博：[Trinea](https://weibo.com/trinea)&nbsp;&nbsp;&nbsp;&nbsp;主页：[www.trinea.cn](http://www.trinea.cn/)  
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 ## 目前包括：  
 >[Android开源项目第一篇——个性化控件(View)篇](https://github.com/Trinea/android-open-project#%E7%AC%AC%E4%B8%80%E9%83%A8%E5%88%86-%E4%B8%AA%E6%80%A7%E5%8C%96%E6%8E%A7%E4%BB%B6view)