Merge pull request #661 from sendgrid/af4ro-patch-1

updated Readme tag

README.md

@@ -7,6 +7,7 @@
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.txt)
 [![Twitter Follow](https://img.shields.io/twitter/follow/sendgrid.svg?style=social&label=Follow)](https://twitter.com/sendgrid)
 [![GitHub contributors](https://img.shields.io/github/contributors/sendgrid/sendgrid-php.svg)](https://github.com/sendgrid/sendgrid-php/graphs/contributors)
+[![Open Source Helpers](https://www.codetriage.com/sendgrid/sendgrid-php/badges/users.svg)](https://www.codetriage.com/sendgrid/sendgrid-php)
 
 **NEW:** Subscribe to email [notifications](https://dx.sendgrid.com/newsletter/php) for releases and breaking changes.