TemplateDoesNotExist: hstore_default_widget.html

The `templates` and `static` directories were not appearing in my project. I think it's because the `setup.py` config wasn't pulling those files in. I was getting an error: `TemplateDoesNotExist: hstore_default_widget.html`

I looked here for an example: https://github.com/tomchristie/django-rest-framework/blob/master/setup.py.