To solve this Stackoverflow question http://stackoverflow.com/questions/36510620/cant-view-thumbnail-created-in-django-admin
$ git clone [email protected]:vladir/cherngloong.git .
$ virtualenv venv
$ virtualenv venv/bin/activate
$ pip install -r requirements.txt
$ python manage.py createsuperuser
python manage.py runserver
Go to http://127.0.0.1:8000/admin/, login with you superuser credentials, add files, and you will see the thumbnails.