README-NEW-AUTOBUILDER: Add to scheduler documentation
README-NEW-AUTOBUILDER: Add to scheduler documentation

Adds detail on the Nightly scheduler properties that are
available.  Notes default settings where appropriate and
notes which values must be set by the user.

Signed-off-by: Bryan Evenson <c276005b3c7bb23309ceeaa742f334cfb4d99fac@melinkcorp.com>

denny820909/builder,denny820909/builder,denny820909/builder,denny820909/builder