Added an upper bound on the composer constraint

composer.json

@@ -13,7 +13,7 @@
     ],
     "require": {
         "php": ">=5.3.2",
-        "jms/metadata": ">=1.1.0"
+        "jms/metadata": ">=1.1.0,<1.3-dev"
     },
     "require-dev": {
         "symfony/framework-bundle": "2.*",