From 9c2fe9480ce70ffcfb70a4bf3008b15d43b3d15c Mon Sep 17 00:00:00 2001
From: Sylvain Arreckx <sylvain.arreckx@gmail.com>
Date: Tue, 17 Jan 2017 17:17:47 +0100
Subject: [PATCH] add another reference.

---
 thanks.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/thanks.md b/thanks.md
index bb4d48c1..4f65b5d2 100644
--- a/thanks.md
+++ b/thanks.md
@@ -1,6 +1,9 @@
 ### References
 
-[1]: **Git** Book: https://git-scm.com/book/en/v2
+[1]: **Git** Book:
+https://git-scm.com/book/en/v2
+
+<br>[2]: GitHub training services: https://services.github.com/training/
 
 
 ### Cheat sheet
-- 
GitLab