add environs to Configuration section

README.md

@@ -140,6 +140,7 @@ _For a complete listing of all available packages, see [Django Packages](https:/
 - [django-configurations](https://github.com/jazzband/django-configurations) - eases Django project configuration by relying on the composability of Python classes and following principles of [the twelve-factor app](https://12factor.net/config).
 - [dynaconf](https://www.dynaconf.com/django/) - Dynaconf loads django settings from multiple sources (multiple file formats, env vars, redis, vault, etcd), manages secrets, and allows for different merging strategies all following [the twelve-factor app](https://12factor.net/config).
 - [django-extra-settings](https://github.com/fabiocaccamo/django-extra-settings) - Config and manage typed extra settings using just the django admin.
+- [environs](https://github.com/sloria/environs) - Simplified environment variable parsing that comes with a [Django helper](https://github.com/sloria/environs#usage-with-django) that installs additional packages.
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 ### Content Management Systems