Fixed #17625 -- Mention in the management command docs that modules with an...

:doc:`tutorial</intro/tutorial01>`.

To do this, just add a ``management/commands`` directory to the application.

Each Python module in that directory will be auto-discovered and registered as

a command that can be executed as an action when you run ``manage.py``::

Each Python module in that directory will be auto-discovered. Modules having

names not starting with an underscore will be registered as commands that can be

executed as an action when you run ``manage.py``::

    polls/

        __init__.py

            __init__.py

            commands/

                __init__.py

                _private.py

                closepoll.py

        tests.py

        views.py

In this example, the ``closepoll`` command will be made available to any project

that includes the ``polls`` application in :setting:`INSTALLED_APPS`.

The ``_private.py`` module will not be available as a management command.

The ``closepoll.py`` module has only one requirement -- it must define a class

``Command`` that extends :class:`BaseCommand` or one of its

:ref:`subclasses<ref-basecommand-subclasses>`.