Juan 20/04/2015: add bash beginning of script

bin/Lfi2cdf

+#!/bin/bash
 #MNH_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
 #MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 #MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt