Add pypy3 to tox and travis
Document automatic usage of db mark with Django's TestCase

Closes https://github.com/pelme/pytest_django/pull/70.
Merge pull request #139 from blueyed/travis-add-pypy3

Add pypy3 to tests / travis
tox/travis: test with both pytest 2.5 and 2.6

Fixes https://github.com/pelme/pytest_django/issues/151
Merge pull request #149 from blueyed/pytest-2.6

Use both pytest 2.5 and 2.6 for tox/travis
Update README with currently supported versions
tests: remove un-used settings fixture with south tests
Cleanup of the `django_testdir` fixture:

Explicilty register a `django_project` marker that accepts keyword
options to setup the django project in different ways. Also, run the
tests with --strict.
Move the MIDDLEWARE_CLASSES setting from the django_testdir
(Slightly) better name for django.setup() sequence test
Fixed lint errors from previous commits
Updated README to be more concise and point to more useful links
sq
Wording change in import error FAQ
Recommend setuptools rather than distutils in FAQ
Recommend using a fixture for setting language
Updated FAQ on test collection + removed FAQ on DJANGO_SETTINGS_MODULE
Added a note about SOUTH_TESTS_MIGRATE
Updated wording in xdist FAQ
Added contact/help FAQ