Updated README

README.md

@@ -1,24 +1,48 @@
 # `mobicms/testutils`
-[![GitHub](https://img.shields.io/github/license/mobicms/testutils?color=green)](https://github.com/mobicms/testutils/blob/main/LICENSE)
+[![GitHub](https://img.shields.io/github/license/mobicms/testutils)](https://github.com/mobicms/testutils/blob/main/LICENSE)
 [![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/mobicms/testutils)](https://github.com/mobicms/testutils/releases)
 [![Packagist](https://img.shields.io/packagist/dt/mobicms/testutils)](https://packagist.org/packages/mobicms/testutils)
 
-[![CI-Analysis](https://github.com/mobicms/testutils/workflows/Analysis/badge.svg)](https://github.com/mobicms/testutils/actions?query=workflow%3AAnalysis)
-[![CI-Tests](https://github.com/mobicms/testutils/workflows/Tests/badge.svg)](https://github.com/mobicms/testutils/actions?query=workflow%3ATests)
+[![CI-Analysis](https://github.com/mobicms/testutils/workflows/analysis/badge.svg)](https://github.com/mobicms/testutils/actions?query=workflow%3Aanalysis)
+[![CI-Tests](https://github.com/mobicms/testutils/workflows/tests/badge.svg)](https://github.com/mobicms/testutils/actions?query=workflow%3Atests)
 [![Sonar Coverage](https://img.shields.io/sonar/coverage/mobicms_testutils?server=https%3A%2F%2Fsonarcloud.io)](https://sonarcloud.io/code?id=mobicms_testutils)
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=mobicms_testutils&metric=alert_status)](https://sonarcloud.io/summary/overall?id=mobicms_testutils)
 
-## License
-This package is licensed for use under the MIT License.  
-Please see [LICENSE](https://github.com/mobicms/testutils/blob/develop/LICENSE) for more information.
 
+## Installation
+
+The preferred method of installation is via [Composer](http://getcomposer.org). Run the following
+command to install the package and add it as a requirement to your project's
+`composer.json`:
+
+```bash
+composer require mobicms/testutils
+```
+
+
+## Contributing
+Contributions are welcome! Please read [Contributing][contributing] for details.
+
+[![YAGNI](https://img.shields.io/badge/principle-YAGNI-blueviolet.svg)][yagni]
+[![KISS](https://img.shields.io/badge/principle-KISS-blueviolet.svg)][kiss]
 
-## Copyright
-Copyright (c) 2021 [mobiCMS Project](https://mobicms.org).  
-All rights to used third-party libraries, fonts, images, etc. reserved by their authors.
+In our development, we follow the principles of [YAGNI][yagni] and [KISS][kiss].
+The source code should not have extra unnecessary functionality and should be as simple and efficient as possible.
+
+
+## License
+
+This package is licensed for use under the MIT License (MIT).  
+Please see [LICENSE][license] for more information.
 
 
 ## Our links
-- [**Project Website**](https://mobicms.org) and support forum
-- [**Facebook**](https://www.facebook.com/mobicms)
+- [**mobiCMS Project**][website] website and support forum
+- [**GitHub**](https://github.com/mobicms) mobiCMS project repositories
 - [**Twitter**](https://twitter.com/mobicms)
+
+[website]: https://mobicms.org
+[yagni]: https://en.wikipedia.org/wiki/YAGNI
+[kiss]: https://en.wikipedia.org/wiki/KISS_principle
+[contributing]: https://github.com/mobicms/testutils/blob/main/.github/CONTRIBUTING.md
+[license]: https://github.com/mobicms/testutils/blob/main/LICENSE