Log Message:
Update to 0.6

* Convert MASTER_SITES to http site from https site.

Changelog:
0.6 (2013-01-28)
----------------

* Added ``required`` attribute to ``Meta`` to be able to specify which
  settings are required to be set.

* Moved to Travis for the tests: http://travis-ci.org/jezdez/django-appconf

* Stopped support for Django 1.2.X.

* Introduced support for Python >= 3.2.