[CentOS] Centos7 Raspberry Pi 2 Login

Folks

I'm not sure this is the right mailing list for the Centos7 port to 
Raspberry Pi.  On the chance that this is the right place...

I just booted the Centos Linux 7 for Raspbery Pi 2, but have no idea 
what the built-in accounts or passwords are.

I've tried
   user: pi
   password: raspberry
and
   user: root
   password: password

to no avail.

Does anyone know?

Is there a HOW-TO file with helpful information?

Thanks
David