New content of slides (forks)

slides/forks.md

-## Fork
+## Forks
 
-<img src="img/remote-0-master.png" class="as-is" />
+You **fork** when you want to work on a public repository or a protected repository.
 
-<img src="img/remote-1-remote.png" class="as-is" />
+Remember:
 
-## Ajouter une _remote_
+- A **fork** is your own **copy** of a repository.
+- A **fork** can have multiple **branches**
+- A **fork** is not a **branch**, but can have multiple **branches**.
 
-```shell
-$ git remote add origin git@github.com:<user>/<proj>.git
-$ git remote -v
+
+## Fork on GitLab
+
+
+## Fork on GitHub
+
+
+## Clone your fork
+
+Clone first:
+```sh
+$ git clone https://git-r3lab.uni.lu/myGroup/myRepo.git forkMyRepo
 ```
 
+<br>
+then, you can change to the directory:
+```sh
+$ cd forkMyRepo
+```
 
-```shell
-$ git push origin master
+
+## Add the address of the original repository
+
+Add the `upstream` (where you copied from)
+```sh
+$ git remote add upstream https://git-r3lab.uni.lu/origGroup/origRepo.git
 ```
-<img src="img/remote-2-push.png" class="as-is" />
 
+<br>
+You can then check whether the remote address is set correctly:
+```sh
+$ git remote -v
+```
+<!-- <img src="img/remote-0-master.png" class="as-is" /> //-->
+<!-- <img src="img/remote-1-remote.png" class="as-is" /> //-->
+<!--- <img src="img/remote-2-push.png" class="as-is" /> //-->
 
-## Récupérer les changements
 
-```shell
-$ git checkout master     # Aller sur la branche master
-$ git status              # Est-ce propre? (Bien sûr!)
-$ git pull origin master  # Récupérer le travail
-                          # de l'équipe
+## Synchronize your fork
+
+```sh
+$ git checkout master
+$ git status
 ```
 
+<div class="fragment">
+<br>
+Fetch the changes from upstream (similar to pull)
+```sh      
+$ git fetch upstream
+```
 
-## _Sync Branch_
-Terminologie de l'application GitHub
+<div class="fragment">
+<br>
+Merge the retrieved changes
+```sh
+$ git merge upstream/master
+```
+
+<div class="fragment">
+<br>
+Push the changes to your own fork:
+```sh
+$ git push origin master
+```
 
 
 ## Pull/Merge Requests

slides/installation.md

@@ -44,7 +44,7 @@ $ git config --global user.email "first.last@uni.lu"
 
 ## Does it work?
 
-```shell
+```sh
 $ git --version
 # git version 2.10.0
 ```
@@ -77,7 +77,7 @@ Any other rudimentary method such as
 shall **be avoided**!
 
 
-## How do I `clone` any other repository?
+## How do I `clone` a repository?
 
 You can clone any other repository with:
 ```sh