Added compatibility with django-pagination

As #58, with changes requested.
Merge pull request #59 from tomchristie/master

Added compatibility with django-pagination
Re-enable support for Django 1.3.
Enable travis
Push to kick travis
Add dummy SECRET_KEY for 1.5 tests
More Django 1.3 fixes.
Fix up README
Use rst not markdown. (sob)
Use runtests.py style for tests
Add missing contributors

Added @gearheart, @telenieko, @mdornseif, @tino, @cortextual,
@tomchristie.
Merge pull request #63 from tomchristie/fix-authors

Add missing contributors
Merge pull request #61 from tomchristie/travis-config

Added travis config & required test files.
Merge pull request #62 from tomchristie/fix-readme

Fix up README
Add / fix some comments.
Add a compat TestCase for Django < 1.4.
Merge branch 'master' into django-1.3-compat
Add Django 1.3 to Travis config.
Change timezone fallback to datedate.now alias.

These changes are based on pull request feedback from Florian Apolloner.
Thanks!
Change Django requirement to 1.3+.