Add environs (theskumar#127)

sloria · theskumar · commit 7e73a8912fef · 2018-08-09T17:06:01.000+05:30
diff --git a/README.md b/README.md
@@ -261,6 +261,7 @@ Related Projects
 -   [django-environ](https://github.com/joke2k/django-environ)
 -   [django-configuration](https://github.com/jezdez/django-configurations)
 -   [dump-env](https://github.com/sobolevn/dump-env)
+-   [environs](https://github.com/sloria/environs)
 
 Contributing
 ============
