Update README.md

Author: wannesm

README.md

@@ -2,7 +2,9 @@ ADS PhD LaTeX template
 ======================
 
 *This template is the result of a group effort. Please contribute updates and
-improvements.*
+improvements. If you are familiar with Git you can submit changes using a
+[GitHub pull request](https://help.github.com/articles/using-pull-requests) or a
+[Git format-patch](https://www.kernel.org/pub/software/scm/git/docs/git-format-patch.html).*
 
 
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