tutorial: updated instructions
tutorial: updated instructions

InterfaceMasters/ONL,shengzhou/ONL,capveg/ONL,JS-Wang/ONL,JS-Wang/ONL,iamyaw/ONL,jeankuo/ONL,shengzhou/ONL,audihsu-qci/ONL,jeankuo/ONL,iamyaw/ONL,capveg/ONL,InterfaceMasters/ONL,audihsu-qci/ONL