Wiki and docs in cvs

[justin at shiningsilence.com]

> The hard parts with writing docs are getting started, keeping the
> momentum going,
> and having a ready environment to encourage a contribution when time and
> mood permit.

That's a general concept.  You could say the same thing about code, but
this week's bugfix-only time isn't hurting anything, for instance.

If we don't have known, planned periods for cleanup, what other quality
checks can we put in?  There's no review process before something's added.