Update README.md

Author: RElesgoe

README.md

@@ -88,3 +88,6 @@ Try accessing this endpoint: [local.bnetdocs.org](https://local.bnetdocs.org)
 
 \* You may need to modify your `/etc/hosts` file if your development
    environment is not your `localhost`.
+
+## Contributing
+Please read [CONTRIBUTING.md](https://github.com/BNETDocs/bnetdocs-web/blob/phoenix/CONTRIBUTING.md)