Add tag example

src/tex/utiliser_versions/marquer_version.tex

@@ -10,7 +10,17 @@
 		\begin{Verbatim}
 $ git tag mon_tag HEAD~1 \Pause
 $ git log --graph --decorate \Pause
-//TODO
+* \textcolor{yellow}{commit 5b63bd1f9afe4685b60074030960e39bb5152e67 (}{\bf\textcolor{cyan}{HEAD ->} \textcolor{green}{master}}\textcolor{yellow}{)}
+\textcolor{red}{|} Author: Thibaud Duhautbout <thibaud@duhautbout.ovh>
+\textcolor{red}{|} Date:   Thu Jan 3 15:55:33 2019 +0100
+\textcolor{red}{|}
+\textcolor{red}{|}     Second commit
+\textcolor{red}{|}
+* \textcolor{yellow}{commit 712951dbb3ee0cc4d248582dc5408da3afdec853 (tag: mon_tag)}
+  Author: Thibaud Duhautbout <thibaud@duhautbout.ovh>
+  Date:   Thu Jan 3 15:37:54 2019 +0100
+
+      Ajout du premier fichier
 		\end{Verbatim}
 	\end{beamercolorbox}