Allow Symfony 4

Author: Evgenas

composer.json

@@ -8,11 +8,11 @@
         "symfony2"
     ],
     "type": "symfony-bundle",
-    "version": "1.0.3",
+    "version": "1.0.4",
     "license": "MIT",
     "require": {
         "php": ">=5.3",
-        "symfony/framework-bundle": "~2.3|~3.0"
+        "symfony/framework-bundle": "~2.3|~3.0|~4.0"
     },
     "require-dev": {
         "phpspec/phpspec": "^2.5",