new instructions

README.md

@@ -16,12 +16,13 @@ In order to use the slide deck, you must have:
 - Fork this repository
 - Clone your fork
     ```bash
-    $ git clone ssh://git@git-r3lab-server.uni.lu:8022/<yourUsernam>/presentations.git
+    $ git clone ssh://git@git-r3lab-server.uni.lu:8022/<yourUsername>/presentations.git
     ```
 - Open a terminal and work on your presentation:
     ```bash
     $ cd presentations
-    $ python contribute.py --date="YYYY-MM-DD" --name="yourAwesomeTitle"
+    $ pip install .
+    $ contribute --date="YYYY-MM-DD" --name="yourAwesomeTitle"
     ```
 
 **Note**: The first time you run `contribute`, a new branch is automatically created with the name `YYYY-MM-DD_yourAwesomeTitle`.