update ps.sh
update ps.sh

avantcredit/parameter_server,xindaya/parameter_server,avantcredit/parameter_server,xindaya/parameter_server,xindaya/parameter_server,avantcredit/parameter_server,ashhher3/parameter_server,austinbyers/parameter_server,austinbyers/parameter_server,dmlc/parameter_server,austinbyers/parameter_server,dmlc/parameter_server,avantcredit/parameter_server,ashhher3/parameter_server,dmlc/parameter_server,xindaya/parameter_server,ashhher3/parameter_server,austinbyers/parameter_server,austinbyers/parameter_server,ashhher3/parameter_server,dmlc/parameter_server