update README.md

README.md

@@ -10,13 +10,13 @@ CADET-RDM can be installed using
 Create a new project repository or convert an existing repository into a CADET-RDM repo:
 
 ```bash
-cadet-rdm initialize-repo <path-to-repo> <output-folder-name>
+cadet-rdm initialize-repo <path-to-repo>
 ```
 or from python
 
 ```python
 from cadetrdm import initialize_repo
-initialize_repo(path_to_repo, output_folder_name)
+initialize_repo(path_to_repo)
 ```
 
 The `output_folder_name` can be given optionally. It defaults to `output`.