Upgrade the config of php-cs-fixer to the new format

Author: stof

.gitattributes

@@ -1,7 +1,7 @@
 /.github         export-ignore
 /.gitattributes   export-ignore
 /.gitignore       export-ignore
-/.php_cs.dist	    export-ignore
+/.php-cs-fixer.dist.php export-ignore
 /.travis.yml      export-ignore
 /Changelog.md     export-ignore
 /Makefile         export-ignore

.gitignore

@@ -1,4 +1,4 @@
-.php_cs
+.php-cs-fixer.php
 .php_cs.cache
 composer.lock
 phpunit.xml

.php_cs.dist .php-cs-fixer.dist.php

@@ -9,7 +9,7 @@
 file that was distributed with this source code.
 EOF;
 
-return PhpCsFixer\Config::create()
+return (new PhpCsFixer\Config())
     ->setRules([
         '@Symfony' => true,
         'array_syntax' => ['syntax' => 'short'],