Enhancement: Add minimal configuration for php-cs-fixer

Author: localheinz

.gitignore

@@ -2,6 +2,7 @@
 /doc/
 *.iml
 composer.phar
+.php_cs.cache
 .vagrant
 integration-tests/vendor
 composer.lock

.php_cs

@@ -0,0 +1,10 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()->in(__DIR__);
+
+return PhpCsFixer\Config::create()
+ ->setFinder($finder)
+ ->setUsingCache(true)
+ ->setRules([
+ '@PSR2' => true,
+ ]);