REquire RoutingBundle 1.2.0 to fix HierarchyInterface usage

Author: wouterj

composer.json

@@ -23,7 +23,7 @@
         "symfony-cmf/core-bundle": "~1.1,>=1.1.0"
     },
     "require-dev": {
-        "symfony-cmf/routing-bundle": "~1.2",
+        "symfony-cmf/routing-bundle": "~1.2,>=1.2.0",
         "symfony-cmf/testing": "dev-lowest_versions",
         "sonata-project/doctrine-phpcr-admin-bundle": "~1.1",
         "symfony/monolog-bundle": "~2.3"