!27 更新readme

From: @cheng-wenzhe1
Reviewed-by: @weidongkl
Signed-off-by: @weidongkl

README.en.md

@@ -8,15 +8,41 @@ Software architecture description
 
 #### Installation
 
-1.  xxxx
+1. Download Openeuler ISO image and install the system
-2.  xxxx
-3.  xxxx
 
-#### Instructions
+   ```
+   https://openeuler.org/zh/download/
+   ```
 
-1.  xxxx
+2. Update software source
-2.  xxxx
+
-3.  xxxx
+   ```
+   sudo dnf update
+   ```
+
+3. Install DDE
+
+   ```
+   sudo dnf install dde
+   ```
+
+4. The settings are started as a graphical interface
+
+   ```
+   sudo systemctl set-default graphical.target
+   ```
+
+5. restart
+
+   ```
+   sudo reboot
+   ```
+
+6. After the restart is completed, login to the desktop using the user created during the installation or openeuler user
+
+   ```
+   DDE desktop cannot login with root account. DDE has built-in openeuler user whose password is openeuler
+   ```
 
 #### Contribution
 

README.md

@@ -9,15 +9,41 @@ Deepin New Desktop Environment - Next
 
 #### 安装教程
 
-1.  xxxx
+1. [下载](https://openeuler.org/zh/download/)openEuler ISO镜像并安装系统
-2.  xxxx
-3.  xxxx
 
-#### 使用说明
+   ```
+   https://openeuler.org/zh/download/
+   ```
 
-1.  xxxx
+2. 更新软件源
-2.  xxxx
+
-3.  xxxx
+   ```
+   sudo dnf update
+   ```
+
+3. 安装DDE
+
+   ```
+   sudo dnf install dde
+   ```
+
+4. 设置以图形界面的方式启动
+
+   ```
+   sudo systemctl set-default graphical.target
+   ```
+
+5. 重启
+
+   ```
+   sudo reboot
+   ```
+
+6. 在重启完成后，使用安装过程中创建的用户或openeuler用户登陆桌面
+
+   ```
+   dde桌面无法使用root账号登陆 dde内置了openeuler用户，此用户的密码为openeuler
+   ```
 
 #### 参与贡献