Tweaked unit test 'quick start' explanation.

Running the tests requires a Django settings module that defines the

databases to use. To make it easy to get started, Django provides a

sample settings module that uses the SQLite database. To run the tests

with this sample ``settings`` module, ``cd`` into the Django

``tests/`` directory and run:

with this sample ``settings`` module:

.. code-block:: bash

    ./runtests.py --settings=test_sqlite

If you get an ``ImportError: No module named django.contrib`` error,

you need to add your install of Django to your ``PYTHONPATH``.

    git clone git@github.com:django/django.git django-repo

    cd django-repo/tests

    PYTHONPATH=..:$PYTHONPATH python ./runtests.py --settings=test_sqlite

.. _running-unit-tests-settings:

if you're proposing patches for Django, it's a good idea to test

across databases), you may need to define your own settings file.

To run the tests with different settings, ``cd`` to the ``tests/`` directory

and type:

.. code-block:: bash

    ./runtests.py --settings=path.to.django.settings

To run the tests with different settings, ensure that the module is on your

``PYTHONPATH`` and pass the module with ``--settings``.

The :setting:`DATABASES` setting in this test settings module needs to define

The :setting:`DATABASES` setting in any test settings module needs to define

two databases:

* A ``default`` database. This database should use the backend that