Update instructions
Update instructions

emetsys/Teaching-HEIGVD-RES-2016-Labo-00,raphael-henocq/Teaching-HEIGVD-RES-2016-Labo-00,SoftEng-HEIGVD/Teaching-HEIGVD-RES-2017-Labo-00,luca15/Teaching-HEIGVD-RES-2017-Labo-00,SoftEng-HEIGVD/Teaching-HEIGVD-RES-2016-Labo-00