Move Acme demo bundle to sensio DistributionBundle

[romainneutron]

See https://github.com/symfony/symfony-standard/issues/639
Merge sensiolabs/SensioDistributionBundle#119 before this one

[romainneutron]

How to test this ?

First,

git clone git@github.com:romainneutron/symfony-standard.git

then edit composer.json and add:

    "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/romainneutron/SensioDistributionBundle"
        }
    ],
    "require": {
        "sensio/distribution-bundle": "dev-acme-demo-bundle"
    }

finally

composer install

[romainneutron]

Weird error, fabbot propose me to patch a file that bas been removed. Here is the proposed patch:

--- src/Acme/DemoBundle/Controller/WelcomeController.php    2014-03-20 17:31:33.845442703 +0000
+++ src/Acme/DemoBundle/Controller/WelcomeController.php    2014-03-20 17:31:39.109442703 +0000
@@ -13,6 +13,7 @@
          * or @Template annotation as demonstrated in DemoController.
          *
          */
+
         return $this->render('AcmeDemoBundle:Welcome:index.html.twig');
     }
 }