update readme

Author: mmasiukevich

README.md

@@ -1,7 +1,21 @@
+## What is it?
 [![Build Status](https://travis-ci.org/php-service-bus/message-serializer.svg?branch=v3.0)](https://travis-ci.org/php-service-bus/message-serializer)
 [![Code Coverage](https://scrutinizer-ci.com/g/php-service-bus/message-serializer/badges/coverage.png?b=v3.0)](https://scrutinizer-ci.com/g/php-service-bus/message-serializer/?branch=v3.0)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/php-service-bus/message-serializer/badges/quality-score.png?b=v3.0)](https://scrutinizer-ci.com/g/php-service-bus/message-serializer/?branch=v3.0)
 
-## What is it?
+This component is part of the [PHP Service Bus](https://github.com/php-service-bus/service-bus). Messages serialization implementation
+
+## Support
+* [Telegram chat (RU)](https://t.me/php_service_bus)
+* Create issue [https://github.com/php-service-bus/service-bus/issues](https://github.com/php-service-bus/service-bus/issues)
+
+## Contacts
+* [`dev@async-php.com`](mailto:dev@async-php.com)
+
+## Security
+
+If you discover any security related issues, please email [`dev@async-php.com`](mailto:dev@async-php.com) instead of using the issue tracker.
+
+## License
 
-Messages serialization component
+The MIT License (MIT). Please see [LICENSE](LICENSE) for more information.