update readme
update readme

AstroPhysicsUZH/aces_workshop_2017_homepage,RafiKueng/aces_workshop_2017_homepage,AstroPhysicsUZH/aces_workshop_2017_homepage,AstroPhysicsUZH/aces_workshop_2017_homepage,AstroPhysicsUZH/aces_workshop_2017_homepage,RafiKueng/aces_workshop_2017_homepage,RafiKueng/aces_workshop_2017_homepage,RafiKueng/aces_workshop_2017_homepage