Add a link to documentation on the main web site

[szabgab]

It was mentioned as a reply to one of my blog posts.
​http://szabgab.com/blog/2009/09/1252306069.html

I think first we need to have a real documentation of the features (probably in the pod of the code. Generate html pages from those documents and then we can link to them.

Alternatively (or in addition) we might need to fill the Features first and then link the documentation there.