diff --git a/launch.sh b/launch.sh
index 8b126b6..202dbcd 100755
--- a/launch.sh
+++ b/launch.sh
@@ -78,6 +78,17 @@ show_help() {
   echo -e "   - restore dump Restore the given dump"
   echo -e "   - start args   Launch Gissmo Docker container (created by 'create' command) with a name given in GISSMO_DOCKER_NAME variable. args is optional."
   echo -e "   - stop         Stop Gissmo Docker container which name is GISSMO_DOCKER_NAME variable content"
+  echo ""
+  echo "For an example you can use it in this order:"
+  echo ""
+  echo -e "    $PROGRAM init"
+  echo -e "    $PROGRAM create"
+  echo -e "    $PROGRAM restore ~/2015.05.06.dump"
+  echo -e "    $PROGRAM migrate"
+  echo -e "    $PROGRAM dev"
+  echo -e "    $PROGRAM stop"
+  echo -e "    $PROGRAM start python manage.py shell"
+  echo -e "    $PROGRAM stop"
   # TODO: Add clean() command to STOP and DELETE Gissmo Docker container
   # TODO: Add clean_db() command to STOP and DELETE postgreSQL Docker container
   # TODO: Add clean_all() command that makes clean() and clean_db()
@@ -178,7 +189,12 @@ init() {
   else
     GIT_WORK_TREE="${GISSMO_DIR}/" GIT_DIR="${GISSMO_DIR}/.git/" git pull -q origin master || error_and_quit "Pull command on Git repository failed."
   fi
-  info "Git repository checked."
+  info "Git repository state checked."
+  # install pre-commit hook that check code validity and more
+  if ! test -f "${GISSMO_DIR}/.git/hooks/pre-commit"; then
+    cp "${GISSMO_DIR}/scripts/git_hooks/pre-commit" "${GISSMO_DIR}/.git/hooks/pre-commit" || error_and_quit "Failed to install pre-commit hook."
+    info "Git repository pre-commit hook installed."
+  fi
   . bin/activate || error_and_quit "Failed entering python virtual environment"
   cd $GISSMO_DIR
   pip install -q -r requirements.txt || error_and_quit "Python dependancies installation failed."