Merge pull request #17 from Tivix/develop

Develop
update demo doc
Fix app_settings import

The url paths
```
    url(r'^rest-auth/', include('rest_auth.urls')),
    url(r'^rest-auth/registration/', include('rest_auth.registration.urls')),
```
Weren't working for me, I kept getting an ImportError `No module named 'app_settings'`.
This fixes that issue for me on Win7 x64, Python 3.4, Django 1.7
Merge pull request #18 from Madsn/patch-1

Fix app_settings import
Update requirements.pip
define permission classes inside views
Merge branch 'master' of github.com:Tivix/django-rest-auth
modified utils.py in order to work properly with python2 and python3
Merge pull request #28 from APSL/master

modified utils.py in order to work properly with python2 and python3