Rename Readme to be rendered as markdown

1. rename the file
2. replace reference in setup.py

created branch 1-rename-readme-to-be-rendered-as-markdown

By Marcel Huber on 2016-12-14T08:58:50 (imported from GitLab)

mentioned in merge request !1 (merged)

By Marcel Huber on 2016-12-14T09:02:53 (imported from GitLab)

closed via merge request !1 (merged)

By Marcel Huber on 2016-12-14T09:03:00 (imported from GitLab)

closed via commit dfbac6aa

By Marcel Huber on 2016-12-14T09:03:00 (imported from GitLab)