稍微更新一下 Readme.

README.md

@@ -1,2 +1,12 @@
-# install-ssh
+# Quickly Configuring SSH Server
 Quickly install SSH into the server.
+
+## Usage
+执行命令：
+```bash
+curl -s https://lamgc.github.io/quickly-conf-sshd/conf-sshd.sh | bash -s -- -c
+```
+如果不希望自动更新密钥，可以执行：
+```bash
+curl -s https://lamgc.github.io/quickly-conf-sshd/conf-sshd.sh | bash -s
+```