diff --git a/README.md b/README.md
index c628bce..a93b20c 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,7 @@
 # hot-reload
 golang command fsnotify hot-reload
+
+usage
+hot-reload -d ./workdir go run .
+
+目前支持 window，linux下暂不支持，欢迎 PR