update README.md

LTaooo · LTaooo · commit 5cfe55e22735 · 2023-09-09T11:41:22.000+08:00
diff --git a/README.md b/README.md
@@ -17,6 +17,10 @@
     ```dotenv
       SERVER_DRIVER=roadrunner
     ```
+#### 三. 安装swoole驱动
+```shell
+    composer require microphp/swoole
+```
 
 ### 运行
 ```shell
