Added badges

Author: PeeHaa

README.md

@@ -1 +1,7 @@
-# phpunit-extension
+# phpunit-extension
+
+[![Latest Stable Version](https://poser.pugx.org/harmonyio/phpunit-extension/v/stable)](https://packagist.org/packages/harmonyio/phpunit-extension)
+[![Build Status](https://travis-ci.org/HarmonyIO/PHPUnit-Extension.svg?branch=master)](https://travis-ci.org/HarmonyIO/PHPUnit-Extension)
+[![Build status](https://ci.appveyor.com/api/projects/status/975c97860u29be9f/branch/master?svg=true)](https://ci.appveyor.com/project/PeeHaa/phpunit-extension/branch/master)
+[![Coverage Status](https://coveralls.io/repos/github/PeeHaa/phpunit-mock-objects/badge.svg?branch=master)](https://coveralls.io/github/PeeHaa/phpunit-mock-objects?branch=master)
+[![License](https://poser.pugx.org/harmonyio/phpunit-extension/license)](https://packagist.org/packages/harmonyio/phpunit-extension)