simplified a demo controller
merged branch fabpot/security-simplification (PR #541)

This PR was merged into the master branch.

Discussion
----------

simplified a demo controller

Commits
-------

a55b80f simplified a demo controller
updated VENDORS for 2.3.0-BETA2
updated bundle deps to 2.3
updated version to 2.4
Merge pull request #13 from symfony/master

Merge symfony/standard with Lexance/symfony-multidomain [master]