Require RoutingBundle 1.2.0 to fix HierarchyInterface usage

Author: wouterj

composer.json

@@ -13,7 +13,7 @@
     "require": {
         "php": ">=5.3.9",
         "symfony-cmf/routing-auto": "~1.0",
-        "symfony-cmf/routing-bundle": "~1.2",
+        "symfony-cmf/routing-bundle": "~1.2,>=1.2.0",
         "symfony-cmf/core-bundle": "~1.2",
         "aferrandini/urlizer": "1.0.*",
         "symfony/config": "~2.2",