Update the quick start guide
Update the quick start guide

janestreet/jbuilder,dra27/jbuilder,rdavison/jbuilder,rdavison/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder