Standardize the README format (#41)

Author: TavoNiievez

readme.md

@@ -1,14 +1,25 @@
-# Codeception module for Yii2 framework
+# Codeception Module Yii2
 
-![Build Status](https://github.com/Codeception/module-yii2/workflows/CI/badge.svg)
+A Codeception module for Yii2 framework
+
+[![Actions Status](https://github.com/Codeception/module-yii2/workflows/CI/badge.svg)](https://github.com/Codeception/module-yii2/actions)
+[![Latest Stable Version](https://poser.pugx.org/codeception/module-yii2/v/stable)](https://github.com/Codeception/module-yii2/releases)
+[![Total Downloads](https://poser.pugx.org/codeception/module-yii2/downloads)](https://packagist.org/packages/codeception/module-yii2)
+[![License](https://poser.pugx.org/codeception/module-yii2/license)](/LICENSE)
 
 ## Installation
 
 ```
-composer require --dev "codeception/module-yii2"
+composer require "codeception/module-yii2" --dev
 ```
 
 ## Documentation
 
 - [Getting started](https://codeception.com/for/yii)
 - [Module documentation](https://codeception.com/docs/modules/Yii2)
+
+## License
+
+`Codeception Module Yii2` is open-sourced software licensed under the [MIT](/LICENSE) License.
+
+© Codeception PHP Testing Framework