Update README to include pictos

Author: Sebastien Malot

README.md

@@ -2,3 +2,13 @@ Kong
 ====
 
 PHP Wrapper for Kong API Gateway - Microservices Management Layer, delivering high performance and reliability.
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+[![Build Status](https://travis-ci.org/smalot/kong-api.png?branch=master)](https://travis-ci.org/smalot/kong-api)
+[![Current Version](https://poser.pugx.org/smalot/kong-api/v/stable.png)](https://packagist.org/packages/smalot/kong-api)
+[![composer.lock](https://poser.pugx.org/smalot/kong-api/composerlock)](https://packagist.org/packages/smalot/kong-api)
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+[![Total Downloads](https://poser.pugx.org/smalot/kong-api/downloads.png)](https://packagist.org/packages/smalot/kong-api)
+[![Monthly Downloads](https://poser.pugx.org/smalot/kong-api/d/monthly)](https://packagist.org/packages/smalot/kong-api)
+[![Daily Downloads](https://poser.pugx.org/smalot/kong-api/d/daily)](https://packagist.org/packages/smalot/kong-api)
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