Update WP_CLI_Helper package version

Author: mehrshaddarzi

composer.json

@@ -25,7 +25,7 @@
   },
   "require": {
     "php": "^5.5 || ^7.0",
-    "wp-packagist/wp-cli-helper": "dev-master",
+    "wp-packagist/wp-cli-helper": ">=1.0.2",
     "ext-json": "*",
     "ext-curl": "*"
   },