Mention optional arguments in the readme

README.md

@@ -31,6 +31,14 @@ The script can be called using spawn in the users init file. For example:
 riverctl map normal Mod4 Up spawn "cycle-focused-tags previous 9"
 riverctl map normal Mod4 Down spawn "cycle-focused-tags next 9"
 ```
+Optional arguments can be passed to modify the behaviour, including:
+
+- Skip empty tags
+- Skip occupied tags
+- Cycle tags on all displays
+- Move currently focused window with the tags
+
+Run `cycle-focused-tags --help` for details.
 
 
 ## Install