Added Securing PHP: Core Concepts

Remove trailing whitespaces

On PHP.ug you can find an overview of all PHP-Usergroups known to the maintainers. It's also the source of the usergoup-list on php.net/ug.php

Added Securing PHP: Core Concepts by Chris Cornutt to the book list.

Add PHPLOC to code analysis section

Fix a typo in README.md

Fix typo

@mathiasverraes money is correct url

The one provided is fork of https://github.com/mathiasverraes/money

Added Symfony CMF to framework

Added Phing

monga changed url

PsySh -> PsySH

:)

Add Rockeeter.