added readme information

Author: wachterjohannes

CONTRIBUTING.md

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+# Contributing
+
+PHP-Task is an open source, community-driven project. We follow the same coding standards as Symfony.

README.md

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 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/php-task/TaskBundle/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/php-task/TaskBundle/?branch=master)
 [![Code Coverage](https://scrutinizer-ci.com/g/php-task/TaskBundle/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/php-task/TaskBundle/?branch=master)
 
-Symfony integration for PHPTask library.
+Symfony integration for php-task library.
+
+## Features
+
+Additional features which are implemented in this bundle.
+
+* Handler discovery
+* Automatic registration of frequent tasks
+* Different run possibilities (terminate event or command for a cron-job)
+
+## Installation
+
+```bash
+composer require php-task/TaskBundle @dev
+```
+
+## Contribution
+
+__This project is under heavy development. Therefore we can not guarantee full backwards compatibility at the current stage.__
+
+Pull requests are welcome. Please see our [CONTRIBUTING](https://github.com/php-task/TaskBundle/blob/master/CONTRIBUTING.md) guide.