Update README.md

README.md

@@ -45,6 +45,34 @@ Currently, the timestamp format is not customizable. Let me know if support for
 
 ## Usage
 
+Arguments
+```shell
+  -dir-mode string
+        Mode bits for directories can be created while syncing (default "0777")
+  -file-mode string
+        Mode bits for files created while syncing (not applicable for hardlink mode) (default "0644")
+  -mode string
+        Mode (default "hardlink")
+  -overwrite
+        Overwrite existing files
+  -skip-full-sync
+        Skip full sync at startup
+  -source string
+        Source directory
+  -target string
+        Target directory
+  -watch
+        Watch for changes in the source directory (default true)
+
+```
+
+`-skip-full-sync` and `-watch` are not compatible.
+
+`-source` and `-target` are required.
+
+
+## Examples
+
 ### One-Time Run
 
 #### Copy Files