Add link and badge to PyPI
Add link and badge to PyPI

This is useful to be able to quickly check these things:

- Whether this package has been released on PyPI or not
- Which version number is the latest on PyPI
- Once you click on the link, you can verify what the PyPI package name is, for use with `pip`
arteria/django-hijack-admin,arteria/django-hijack-admin,arteria/django-hijack-admin