Add link to wiki dev guidelines to readme

README.rst

@@ -81,14 +81,10 @@ This can be useful for Jupyter notebook tools as https://max-jhub.desy.de/hub/lo
 Contributing
 ************
 
-Code Standards
-==============
+Guidelines
+==========
 
-... something?
-
-TODO: How should we handle where what information goes? Right now a decent
-amount of stuff is in the wiki, but I think it's a bit nicer to have some of the
-information in the readme as it'll be there and visible when you clone the repo.
+Development guidelines can be found on the GitLab Wiki page here: https://git.xfel.eu/gitlab/detectors/pycalibration/wikis/GitLab-Guidelines
 
 Basics
 ======