documentation moved into wiki.tmda.net

If you take a look at the TMDA homepage (http://tmda.net/) you'll see 
there's now very little content there.  I moved everything into 
http://wiki.tmda.net/.  The reasons for this I explain here - 
http://thread.gmane.org/gmane.mail.spam.tmda.devel/6396/ - but the short 
of it is that I hope this will make the docs easier to keep up since 
anyone can now add to them or correct them.  This also leaves open the 
possibility of abuse by persons who don't like TMDA, but hopefully as a 
community maintained resources, such things will be spotted by one of 
you and it can be cleaned up.  We'll see how it goes.