allow symfony/options-resolver 3.0

Christoph Singer · Christoph Singer · commit de0625c3a27f · 2016-03-22T16:00:52.000+01:00
diff --git a/composer.json b/composer.json
@@ -6,7 +6,7 @@
     "require": {
         "mrclay/jsmin-php": "^2.3",
         "tubalmartin/cssmin": "^2.4",
-        "symfony/options-resolver": "^2.3"
+        "symfony/options-resolver": ">=2.3"
     },
     "autoload":{
         "psr-4":{
