Readd $id

Avoid "Access level to Acme\UserBundle\Entity\User::$id must be protected (as in class FOS\UserBundle\Entity\User) or weaker" when you run `php app/console doctrine:generate:entities AcmeUserBundle` twice.

Author: BraisGabin

Resources/doc/index.md

@@ -174,6 +174,10 @@ use FOS\UserBundle\Entity\User as BaseUser;
  * User
  */
 class User extends BaseUser {
+    /**
+     * @var integer
+     */
+    protected $id;
 
     public function __construct()
     {