Updated php-cs-fixer version.

composer.json

@@ -37,7 +37,7 @@
     "require-dev": {
         "behat/mink": "1.7.0",
         "behat/mink-selenium2-driver": "1.3.0",
-        "friendsofphp/php-cs-fixer": "1.11.5",
+        "friendsofphp/php-cs-fixer": "1.11.6",
         "phploc/phploc": "2.0.6",
         "phpmd/phpmd": "1.5.0",
         "phpunit/phpunit": "4.8.4",