update README

README.md

-# HDOC CONVERTER PROJECT
+# Hdoc Converter Projet
+
+License GPL3.0
+http://www.gnu.org/licenses/gpl-3.0.txt
+
+Credits : Université de Technologie de Compiègne, NF29 course students
 
 ## What is Hdoc ?
 
@@ -10,4 +15,11 @@ Please refer to the [Hdoc converter project website](http://hdoc.crzt.fr/www/co/
 
 ## What is this repository ?
 
-This repository gathers some of the Hdoc converters, if not all of them.
\ No newline at end of file
+This repository gathers some of the Hdoc converters, if not all of them.
+Project URL : https://gitlab.utc.fr/crozatst/hdoc.git
+
+## How to use Hdoc Converters ?
+
+In order to use a converter, choose the corresponding folder and consult README.md for instructions.
+
+