Added FreeBSD Rocks to the new Advocacy section:

FreeBSD Rocks is an initiative designed to provide the FreeBSD
community with the latest FreeBSD news, software and
resources. All areas include search facilities, making
keyword searching of historical posts a breeze.

Submitted by: Steven Harris <steve@playgal.com>

Move 'FreeBSD vs. Linux' and Daemonnews to Advocacy section.
Move PicoBSD to Architecture section.

Added a Table of Contents.