Added compatibility from sf >= 2.2.*

Author: mmoreram

composer.json

@@ -14,13 +14,13 @@
     ],
     "require": {
         "php": ">=5.4",
-        "symfony/console": "~2.5",
-        "symfony/process": "~2.5",
-        "symfony/finder": "~2.5",
-        "symfony/filesystem": "~2.5",
-        "symfony/yaml": "~2.5.0",
-        "symfony/event-dispatcher": "~2.5",
-        "symfony/property-access": "~2.5"
+        "symfony/console": "~2.2",
+        "symfony/process": "~2.2",
+        "symfony/finder": "~2.2",
+        "symfony/filesystem": "~2.2",
+        "symfony/yaml": "~2.2",
+        "symfony/event-dispatcher": "~2.2",
+        "symfony/property-access": "~2.2"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.1.4"
@@ -42,4 +42,4 @@
             "dev-master": "1.0-dev"
         }
     }
-}
+}