说明格式修改

README.md

@@ -159,25 +159,21 @@ JeecgBoot的宗旨是降低前后端分离的开发成本，提高UI能力的同
 ```bash
 git clone https://github.com/zhangdaiscott/jeecg-boot.git
 cd  jeecg-boot/ant-design-jeecg-vue
-```
 
-- 安装依赖
 ```
+# 安装yarn
+npm install -g yarn
+
+# 下载依赖
 yarn install
-```
 
-- 开发模式运行
-```
-yarn run serve
-```
+# 启动
+yarn start
 
-- 编译项目
-```
+# 编译项目
 yarn run build
-```
 
-- Lints and fixes files
-```
+# Lints and fixes files
 yarn run lint
 ```