Update course title

README.md

-# Data management with GitLab
+# Code and data management with Git
 
-This is the website for the course *Data management with GitLab*. This course
-consists of a introduction to working with the [Git](http://git-scm.com/)
+This is the website for the course *Code and data management with Git*. This
+course consists of a introduction to working with the [Git](http://git-scm.com/)
 version control system for data analysis and is aimed primarily at researchers
 in the LUMC.
 
@@ -16,7 +16,7 @@ with colleagues easy.
 
 - October 14th, 2013: Git introduction course
 - June 23rd, 2014: Git introduction course
-- **December 1st, 2015: Data management with GitLab** ([preparations](PREPARATIONS.md))
+- **December 1st, 2015: Code and data management with Git** ([preparations](PREPARATIONS.md))
 
 For corresponding snapshots of this repository, see [tags](https://git.lumc.nl/humgen/gitcourse/tags).