1) Added an example for the minion config option "providers".
2) Cleaned up line widths on solaris install instructions, and added
information on how to use pkgutil as the default package provider.
3) Since systemd is the default provider for Arch Linux now, I corrected
the information in the "State Providers" page so that the example of
overriding the service provider reflects the current state of the
codebase.
