Update README.md

Author: dovidezra

README.md

@@ -1,6 +1,6 @@
 # PHP GitHub API
 
-![PHP from Packagist](https://img.shields.io/packagist/php-v/jasonjersey/EscWork-Core)
+![PHP from Packagist](https://img.shields.io/packagist/php-v/jasonjersey/php-github-api)
 
 [![Build Status](https://travis-ci.org/KnpLabs/php-github-api.svg?branch=master)](https://travis-ci.org/KnpLabs/php-github-api)
 [![StyleCI](https://styleci.io/repos/3948501/shield?style=flat)](https://styleci.io/repos/3948501)