fix typo in README: pytest -> py.test
Merge pull request #39 from magopian/readme-typo

fix typo in README: pytest -> py.test
added some information to README
tests need django-configurations to run
add the travis badge
Merge pull request #40 from magopian/readme-typo

added some information to README
fixes #33 : document the settings fixture
Merge pull request #41 from magopian/33-document-settings-fixture

fixes #33 : document the settings fixture
add a Makefile to ease contributors' life
Merge pull request #42 from magopian/makefile

add a Makefile to ease contributors' life
pep8
Merge pull request #43 from magopian/pep8

pep8
ignore .cache
Fixed #49: Skip django-configurations tests if not available
Use custom user models on django >= 1.5
Merge pull request #51 from santagada/master

Use custom user models on django >= 1.5
Version 2.3.1
Update links to django docs

It seems django have changed their URLs of the docs a little.  The
links now point back to the right parts of their docs.

Also use the rst link targets instead of the embedded URIs to avoid
repeitions of the URLs.
Fix for skipping django-configurations tests when running on Python < 2.6
Updated django versions in travis