Fed up trying to run it without examples for configs

[Gems]

The last problem I encountered was:

Traceback (most recent call last):
  File "/usr/local/bin/emmio", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.11/site-packages/emmio/__main__.py", line 101, in main
    data: Data = Data.from_directory(data_path)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/emmio/data.py", line 81, in from_directory
    user_data[user_path.name] = UserData.from_config(
                                ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/emmio/user/data.py", line 24, in from_config
    LearnData.from_config(path / "learn", config["learn"]),
                                          ~~~~~~^^^^^^^^^
KeyError: 'learn'

Would be nice to get example configs provided to run the thing.

My goal was to try the vocabulary testing feature.