Update composer.json

Author: brianmc

composer.json

@@ -6,7 +6,7 @@
     "license": "proprietary",
     "homepage": "http://developer.authorize.net",
     "require": {
-        "php": "~5.4 || ~7.0"
+        "php": "~5.4 || ~7.0",
         "ext-curl": "*",
         "ext-json": "*",
         "ext-simplexml": "*",