v1.0: Added more badges to README

- Bagde showing total downloads
- Badge showing version
- Bagde showing license

Author: mghoneimy

README.md

@@ -2,6 +2,9 @@
 [![Build Status](https://travis-ci.org/mghoneimy/php-graphql-client.svg?branch=master)](https://travis-ci.org/mghoneimy/php-graphql-client)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/cb5e0708c4244c1a848be668dbcda8b0)](https://app.codacy.com/app/mghoneimy/php-graphql-client?utm_source=github.com&utm_medium=referral&utm_content=mghoneimy/php-graphql-client&utm_campaign=Badge_Grade_Dashboard)
 [![Codacy Badge](https://api.codacy.com/project/badge/Coverage/c2b0ae3a556547c38e1247d63228adde)](https://www.codacy.com/app/mghoneimy/php-graphql-client?utm_source=github.com&utm_medium=referral&utm_content=mghoneimy/php-graphql-client&utm_campaign=Badge_Coverage)
+[![Total Downloads](https://poser.pugx.org/gmostafa/php-graphql-client/downloads)](https://packagist.org/packages/gmostafa/php-graphql-client)
+[![Latest Stable Version](https://poser.pugx.org/gmostafa/php-graphql-client/v/stable)](https://packagist.org/packages/gmostafa/php-graphql-client)
+[![License](https://poser.pugx.org/gmostafa/php-graphql-client/license)](https://packagist.org/packages/gmostafa/php-graphql-client)
 
 A GraphQL client written in PHP which provides very simple, yet powerful, query generator classes that make the process
 of interacting with a GraphQL server a very simple one.