Update util version to 2.0.

Author: chrisryan

composer.json

@@ -22,7 +22,7 @@
     "license": "MIT",
     "require": {
         "php": "~5.6||~7.0",
-        "dominionenterprises/util": "~1.4",
+        "dominionenterprises/util": "~2.0",
         "guzzle/http": "~3.7",
         "ext-curl": "*",
         "lib-curl": "~7.15"