Docs Correction

There was an attribute VERSION_API that does not exists in the item 6 of
the documentation.
Django 1.6 compatibility (WORK IN PROGRESS) + Correction on order_by

* Adjusting some more references to django.conf.urls
* Correction on the way order_by clauses were treated
CSRF_EXEMPT on JApi Auth

Putting decorator to allow devices to authenticate using POST requests.
Merge pull request #2 from tpborion/master

Some Improvements...