update README.md to notice first compilation

README.md

 A serialization converter from the official UNL format to the proposed RDF-UNL format.
 
-# First use
+# First compilation
 
-This program depends on another package. To install into local maven repository the other dependency run ```bash Script/createOrUpdateLocalMavenRepository.sh```.
+Three solutions exists choose the preferred way.
+
+## Use of script createOrUpdateLocalMavenRepository
+This program depends on another package. To install into local maven repository the other dependency run ```bash Script/```.
 The script requires a username and a password to be completed. Enter yours credentials for gitlab.tetras-libre.fr server.
+
+```shell script
+git clone https://gitlab.tetras-libre.fr/unl/unl2rdf.git unlTools
+cd unlTools
+bash Scripts/createOrUpdateLocalMavenRepository.sh
+mvn compile
+```
+
+## Clone repository rdf-vocabulary
+
+```shell script
+git clone https://gitlab.tetras-libre.fr/unl/rdfunl.git rdf-vocabulary
+pushd rdf-vocabulary
+cd rdf-vocabulary
+mvn install
+popd
+git clone https://gitlab.tetras-libre.fr/unl/unl2rdf.git unlTools
+cd unlTools
+mvn compile
+```
+
+## Install manually rdf-vocabulary
+
+```shell script
+git clone https://gitlab.tetras-libre.fr/unl/rdfunl.git rdf-vocabulary
+cd unlTools
+mvn install:install-file -Dfile=./rdf/libs/rdf-vocabulary-1.0-SNAPSHOT.jar -DgroupId=fr.tetras_libre.rdf.vocabulary -DartifactId=rdf-vocabulary -Dversion=1.0-SNAPSHOT -Dpackaging=jar -DgeneratePom=true
+```