Include license and contribution guide in readme.md (#86)

Author: TavoNiievez

readme.md

@@ -3,6 +3,8 @@
 A Codeception module for Symfony framework.
 
 [![Actions Status](https://github.com/Codeception/module-symfony/workflows/CI/badge.svg)](https://github.com/Codeception/module-symfony/actions)
+[![Total Downloads](https://poser.pugx.org/codeception/module-symfony/downloads)](https://packagist.org/packages/codeception/module-symfony)
+[![License](https://poser.pugx.org/codeception/module-symfony/license)](/LICENSE)
 
 ## Requirements
 
@@ -17,4 +19,14 @@ composer require "codeception/module-symfony" --dev
 
 ## Documentation
 
-[Module documentation](https://codeception.com/docs/modules/Symfony)
+See [the module documentation](https://codeception.com/docs/modules/Symfony).
+
+### How to Contribute
+
+See [the contribution guide](/CONTRIBUTING.md).
+
+## License
+
+`Codeception Module Symfony` is open-sourced software licensed under the [MIT](/LICENSE) License.
+
+© Codeception PHP Testing Framework