add stats to redme

Author: ATernovtsii

README.md

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 # Webservice Asynchronous Bundle
 
+[![Latest Stable Version](https://poser.pugx.org/hengebytes/webservice-core-async-bundle/v/stable.svg)](https://packagist.org/packages/hengebytes/webservice-core-async-bundle)
+[![Total Downloads](https://poser.pugx.org/hengebytes/webservice-core-async-bundle/downloads.svg)](https://packagist.org/packages/hengebytes/webservice-core-async-bundle)
+[![License](https://poser.pugx.org/hengebytes/webservice-core-async-bundle/license.svg)](https://packagist.org/packages/hengebytes/webservice-core-async-bundle)
+
 This bundle provides a simple way to create asynchronous web services in Symfony.
 
 ## Documentation