Wiki for Animation Physics project

[Alej Garcia]

The project now has wiki, which is a way for everyone to contribute
directly. You'll find it here:
http://animationphysics.pbwiki.com/
There is also a link to the wiki from the "Participate" section of the
main Animation Physics site.

I've set up the wiki as totally public so anyone with a PBWiki account
can edit the content. While this may result in some unwanted content,
I'm encouraged by the success of Wikipedia. If this turns out to
create problems then I'll start restricting the site, or at least
parts of it.

Check it out and feel free to add/edit content.

Alej Garcia