Update README.md

Author: lam0819

README.md

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+[![Latest Version on Packagist](https://img.shields.io/packagist/v/solution-forest/ocpp-php.svg?style=flat-square)](https://packagist.org/packages/solution-forest/ocpp-php)
+[![Total Downloads](https://img.shields.io/packagist/dt/solution-forest/ocpp-php.svg?style=flat-square)](https://packagist.org/packages/solution-forest/ocpp-php)
+
 # OCPP-PHP
 
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