Add friendsofphp/php-cs-fixer

.php_cs.dist

@@ -0,0 +1,14 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->in(__DIR__)
+    ->exclude(['fixtures']);
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@PSR2' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'ordered_imports' => true,
+        'phpdoc_order' => true,
+    ])
+    ->setFinder($finder);