require ocramius/pacakge-versions

Author: webmaster777

composer.json

@@ -13,7 +13,8 @@
     "require": {
         "php": ">=5.4.0",
         "ext-curl": "*",
-        "symfony/polyfill-php56": "^1.10"
+        "symfony/polyfill-php56": "^1.10",
+        "ocramius/package-versions": "^1.4"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.25"