Installing X11 - add xorg-minimal

[Eitan Adler]

I think it would be a good idea to include a reference to
x11/xorg-minimal into the handbook.
Perhaps under
Note: The examples above will install the complete X11 distribution
including the servers, clients, fonts etc. Separate packages and ports
of X11 are also available.
Something like:
If you just want to get X up and running install x11/xorg-minimal instead
Should be added.