Update README usage section

Author: plumthedev

readme.md

@@ -11,16 +11,36 @@ Create a configuration file `.php_cs` in the root of your project:
 
 ```php
 <?php
+$projectHeader = <<<'HEADER'
+Yii2 PHP CS Fixer Config
+
+@author Kacper Pruszynski (plumthedev)
+@link https://github.com/plumthedev/yii2-php-cs-fixer-config
+@copyright Copyright (c) 2019 plumthedev
+@license https://github.com/plumthedev/yii2-php-cs-fixer-config/blob/master/LICENSE
+@version 1.0.1
+HEADER;
 
 use plumthedev\PhpCsFixer\Config;
 
 $csConfig = Config::create();
-$csConfigFinder = $csConfig->getFinder();
 
-$csConfigFinder->in(__DIR__); // set finder root directory
+// CS Config setup
+$csConfig->mergeRules([
+    'header_comment' => [
+        'header' => $projectHeader,
+        'commentType' => 'PHPDoc',
+        'separate' => 'bottom',
+    ]
+]);
+
+// CS Finder setup
+$csConfigFinder = $csConfig->getFinder();
+$csConfigFinder->in(__DIR__); // set current project directory
 $csConfig->setFinder($csConfigFinder);
 
 return $csConfig;
+
 ```
 
 ## Running the tests