diff --git a/README.md b/README.md
index a5ae153..3eb2eeb 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,6 @@
             <td align="center" width="200"><a href="#授权weibo"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/weibo.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权钉钉"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/dingding.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权百度"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/baidu.png" width="20"></a></td>
-            <td align="center" width="200"><a href="#授权csdn"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/csdn.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权coding"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/coding.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权腾讯云开发者平台"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/tencent_cloud.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权oschina"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/oschinas.png" width="20"></a></td>
@@ -34,6 +33,7 @@
             <td align="center" width="200"><a href="#授权淘宝"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/taobao.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权google"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/google.png" width="20"></a></td>
             <td align="center" width="200"><a href="#授权facebook"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/facebook.png" width="20"></a></td>
+            <td align="center" width="200"><a href="#授权csdn"><img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/csdn.png" width="20"></a></td>
         </tr>
     </table>
 </center>
@@ -69,6 +69,8 @@ authRequest.authorize();
 authRequest.login("code");
 ```
 
+**配套Demo**：[JustAuth-demo](https://gitee.com/yadong.zhang/JustAuth-demo)
+
 具体的例子可以参考：
 
 - [实现Gitee授权登录](http://t.cn/ExDKxQs)
@@ -87,11 +89,11 @@ authRequest.login("code");
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/oschinas.png" width="20">  |  [AuthOschinaRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthOschinaRequest.java)  |  <a href="https://www.oschina.net/openapi/docs/openapi_user" target="_blank">参考文档</a> |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/alipay.png" width="20">  |  [AuthAlipayRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthAlipayRequest.java)  |  <a href="https://alipay.open.taobao.com/docs/doc.htm?spm=a219a.7629140.0.0.336d4b70GUKXOl&treeId=193&articleId=105809&docType=1" target="_blank">参考文档</a> |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/qq.png" width="20">  |  [AuthQqRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthQqRequest.java)  |  <a href="http://wiki.connect.qq.com/" target="_blank">参考文档</a>  |
-|  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/csdn.png" width="20">  |  [AuthCsdnRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthCsdnRequest.java)  |  待续 |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/wechats.png" width="20">  |  [AuthWeChatRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthWeChatRequest.java)   |  <a href="https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419316505&token=&lang=zh_CN" target="_blank">参考文档</a>  |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/taobao.png" width="20">  |  [AuthTaobaoRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthTaobaoRequest.java)   |  <a href="https://open.taobao.com/doc.htm?spm=a219a.7386797.0.0.4e00669acnkQy6&source=search&docId=105590&docType=1" target="_blank">参考文档</a>  |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/google.png" width="20">  |  [AuthGoogleRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthGoogleRequest.java)   |  <a href="https://developers.google.com/identity/protocols/OpenIDConnect" target="_blank">参考文档</a>  |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/facebook.png" width="20">  |  [AuthFacebookRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthFacebookRequest.java)   |  <a href="https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow" target="_blank">参考文档</a>  |
+|  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/csdn.png" width="20">  |  [AuthCsdnRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthCsdnRequest.java)  |  待续 |
 
 ## 后续开发计划
 
@@ -99,6 +101,15 @@ authRequest.login("code");
 
 另外，期待您和我一起完善这个项目！
 
+## 贡献代码
+
+1. fork本项目到自己的repo
+2. 把fork过去的项目也就是你仓库中的项目clone到你的本地
+3. 修改代码
+4. commit后push到自己的库
+5. 发起PR（pull request） 请求
+6. 等待作者合并
+
 ## 致谢
 
 在项目立项初期，也对当前开源圈的一些相同类型的项目作过调研，同时本项目也参考过这些项目，再次感谢开源圈内的朋友。
@@ -106,7 +117,7 @@ authRequest.login("code");
 [YurunOAuthLogin](https://gitee.com/yurunsoft/YurunOAuthLogin): PHP 第三方登录授权 SDK
 
 
-## 参考图例
+## 参考授权图例
 
 #### 授权gitee
 
@@ -169,15 +180,17 @@ authRequest.login("code");
 
 ![授权facebook登录](https://images.gitee.com/uploads/images/2019/0521/233647_6a89fb45_784199.png "授权facebook登录")
 
-# 交流
+## 关注&交流
 
-|  微信(备注:加群)  |  公众号  |
+|  公众号  |  微信(备注:加群)  |
 | :------------: | :------------: |
-| <img src="https://gitee.com/yadong.zhang/static/raw/master/wx/wx.png" width="170"/> | <img src="https://gitee.com/yadong.zhang/static/raw/master/wx/wechat_account.jpg" width="200" /> |
+| <img src="https://gitee.com/yadong.zhang/static/raw/master/wx/wechat_account.jpg" width="200" /> | <img src="https://gitee.com/yadong.zhang/static/raw/master/wx/wx.png" width="170"/> |
 
  **QQ群** 
+ 
+- JustAuth交流群 （230017570）：专业交流该项目
 
-[![](https://images.gitee.com/uploads/images/2019/0129/191256_a40bceba_784199.png)](https://shang.qq.com/wpa/qunwpa?idkey=3571c554a143eff1e15807de033a240196c6b493b25b903d1d37571cfb6040aa)
+- 开源总群 （190886500）：各个开源项目的都有，也有博客建设等方面的朋友。（注意，该群需付费进入，防止发垃圾广告、垃圾推广等人士）
 
 
 ## 请喝咖啡