Update README.md

Author: johnseth97

README.md

@@ -7,7 +7,7 @@ Features:
 - ✅ Toggle Codex floating window with `:CodexToggle`
 - ✅ Optional keymap mapping via `setup` call
 - ✅ Background running when window hidden
-- ✅ Statusline integration via `require('codex').statusline()` (not yet implemented)
+- ✅ Statusline integration via `require('codex').status()` 
 
 Installation: