minor #511 Enabled the PHP CS rule to fix the file header comment (javiereguiluz)

This PR was squashed before being merged into the master branch (closes #511).

Discussion
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Enabled the PHP CS rule to fix the file header comment

To avoid issues like #510.

Commits
-------

66a02fc Enabled the PHP CS rule to fix the file header comment

Author: javiereguiluz

.php_cs

@@ -1,6 +1,15 @@
 #!/usr/bin/env php
 <?php
 
+$fileHeaderComment = <<<COMMENT
+This file is part of the Symfony package.
+
+(c) Fabien Potencier <[email protected]>
+
+For the full copyright and license information, please view the LICENSE
+file that was distributed with this source code.
+COMMENT;
+
 $finder = PhpCsFixer\Finder::create()
     ->in(__DIR__)
     ->exclude('var')
@@ -17,6 +26,7 @@ return PhpCsFixer\Config::create()
         '@Symfony' => true,
         '@Symfony:risky' => true,
         'array_syntax' => ['syntax' => 'short'],
+        'header_comment' => ['header' => $fileHeaderComment, 'separate' => 'both'],
         'no_useless_else' => true,
         'no_useless_return' => true,
         'ordered_imports' => true,

app/AppCache.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 use Symfony\Bundle\FrameworkBundle\HttpCache\HttpCache;
 
 class AppCache extends HttpCache

app/AppKernel.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 use Symfony\Component\Config\Loader\LoaderInterface;
 use Symfony\Component\HttpKernel\Kernel;
 

app/autoload.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 use Composer\Autoload\ClassLoader;
 use Doctrine\Common\Annotations\AnnotationRegistry;
 

web/app.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 // This is the front controller used when executing the application in the
 // production environment ('prod'). See:
 //   * http://symfony.com/doc/current/cookbook/configuration/front_controllers_and_kernel.html

web/app_dev.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 // This is the front controller used when executing the application in the
 // development environment ('dev'). See:
 //   * http://symfony.com/doc/current/cookbook/configuration/front_controllers_and_kernel.html