Symfony CMF docs have been moved
The Symfony CMF documentation is now part of the official documentation of Symfony2 itself. The new location
is here. Looks much better now, but the still need help in getting
the documentation into a state where they can really take a beginner and turn them into a CMF expert.
The while current state touches on pretty much all aspects of the CMF, there is a lot of room of improvement
in terms of language, details and introducing each concept in the right order. This is the kind of thing
that is really hard for the original authors to get right, since they tend to be oblivious to such aspects.