updated dependencies

composer.json

@@ -15,11 +15,14 @@
         "php": ">=5.3.2",
         "jms/metadata": ">=1.1.0,<1.3-dev"
     },
+    "conflicts": {
+        "symfony/framework-bundle": "<2.1-dev"
+    },
     "require-dev": {
-        "symfony/framework-bundle": ">=2.0,<2.2-dev",
-        "symfony/yaml": ">=2.0,<2.2-dev",
-        "symfony/form": ">=2.0,<2.2-dev",
-        "symfony/validator": ">=2.0,<2.2-dev",
+        "symfony/framework-bundle": ">=2.1,<2.2-dev",
+        "symfony/yaml": ">=2.1,<2.3-dev",
+        "symfony/form": ">=2.1,<2.3-dev",
+        "symfony/validator": ">=2.1,<2.3-dev",
         "twig/twig": ">=1.8,<2.0-dev",
         "doctrine/orm": ">=2.1,<2.4-dev"
     },