Fix "Git too complicated for developers" :-)

ipynb/02_Mercurial_and_Gitlab.ipynb

@@ -6,21 +6,31 @@
 
 ### Why source control management?
 
 Essential tool for scientists and developers!!
 
+%% Cell type:markdown id: tags:
+
 ### Why Mercurial?
 
 - https://www.mercurial-scm.org/ 
 
 - https://fluiddyn.readthedocs.io/en/latest/mercurial_bitbucket.html
 
 Why not Git?
 
-Git is really too complicated for what we need as scientists / students / teachers / developers.
+%% Cell type:raw id: tags:
+
+<div align="middle">
+<img src="./fig/git.png"  style="width: 30%; margin-top: -30px; margin-bottom: -20px"> &nbsp;
+</div>
+
+%% Cell type:markdown id: tags:
+
+Git is really too complicated for what we need as scientists / students / teachers / developers of most scientific programs.
 
-Mercurial is more adapted for us in academics: http://www.legi.grenoble-inp.fr/people/Pierre.Augier/mercurial-as-a-great-version-source-control-management-tool-in-academics.html
+[Mercurial is more adapted for us in academics.](http://www.legi.grenoble-inp.fr/people/Pierre.Augier/mercurial-as-a-great-version-source-control-management-tool-in-academics.html)
 
 %% Cell type:markdown id: tags:
 
 ### Why Gitlab?
 
@@ -28,11 +38,11 @@
 
 ### Warning! Gitlab does not natively support Mercurial!
 
 For now, we'll have to use a Mercurial extension (hg-git) and it won't be as nice as if we could use a platform natively supporting Mercurial (as for example Bitbucket).
 
-But Heptapod (Gitlab with Mercurial support) is coming https://octobus.net/blog/2018-09-18-heptapod-announce.html
+But [Heptapod (Gitlab with Mercurial support)](https://octobus.net/blog/2018-09-18-heptapod-announce.html) is coming.
 
 %% Cell type:markdown id: tags:
 
 ## Level 0: commands `help`, `init`, `status`, `add`, `remove`, `addremove`, `commit`, `log` and `summary`
 

ipynb/21_intro_HPC.ipynb

@@ -1470,7 +1470,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.2"
+   "version": "3.7.3"
   }
  },
  "nbformat": 4,