coding standard fix

Author: garak

.gitignore

@@ -1,3 +1,4 @@
+.php_cs.cache
 build
 config/parameters.yml
 vendor

.php_cs

@@ -0,0 +1,15 @@
+<?php
+// see https://github.com/FriendsOfPHP/PHP-CS-Fixer
+
+$finder = PhpCsFixer\Finder::create()
+    ->in([__DIR__.'/src', __DIR__.'/tests'])
+;
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@Symfony' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'ordered_imports' => true,
+    ])
+    ->setFinder($finder)
+;

composer.json

@@ -32,7 +32,8 @@
         "symfony/yaml": "^3.3"
     },
     "require-dev": {
-        "phpunit/phpunit": "~5.7"
+        "phpunit/phpunit": "~5.7",
+        "friendsofphp/php-cs-fixer": "^2.3"
     },
     "suggest": {
         "ext-apcu": "*",