Update README.md

Signed-off-by: Nathanael Esayeas <nathanael.esayeas@protonmail.com>

README.md

@@ -2,9 +2,10 @@
 
 [![Compliance](https://github.com/ghostwriter/wip/actions/workflows/compliance.yml/badge.svg)](https://github.com/ghostwriter/wip/actions/workflows/compliance.yml)
 [![Supported PHP Version](https://badgen.net/packagist/php/ghostwriter/wip?color=8892bf)](https://www.php.net/supported-versions)
-[![Mutation Coverage](https://img.shields.io/endpoint?style=flat&url=https%3A%2F%2Fbadge-api.stryker-mutator.io%2Fgithub.com%2Fghostwriter%2Fwip%2Fmain)](https://dashboard.stryker-mutator.io/reports/github.com/ghostwriter/wip/main)
+[![GitHub Sponsors](https://img.shields.io/github/sponsors/ghostwriter?label=Sponsor+@ghostwriter/wip&logo=GitHub+Sponsors)](https://github.com/sponsors/ghostwriter)
 [![Code Coverage](https://codecov.io/gh/ghostwriter/wip/branch/main/graph/badge.svg?token=UPDATE_TOKEN)](https://codecov.io/gh/ghostwriter/wip)
 [![Type Coverage](https://shepherd.dev/github/ghostwriter/wip/coverage.svg)](https://shepherd.dev/github/ghostwriter/wip)
+[![Psalm Level](https://shepherd.dev/github/ghostwriter/wip/level.svg)](https://psalm.dev/docs/running_psalm/error_levels)
 [![Latest Version on Packagist](https://badgen.net/packagist/v/ghostwriter/wip)](https://packagist.org/packages/ghostwriter/wip)
 [![Downloads](https://badgen.net/packagist/dt/ghostwriter/wip?color=blue)](https://packagist.org/packages/ghostwriter/wip)
 
@@ -14,7 +15,6 @@ work in progress
 >
 > This project is not finished yet, work in progress.
 
-
 ## Installation
 
 You can install the package via composer:
@@ -29,29 +29,19 @@ composer require ghostwriter/wip
 // work in progress
 ```
 
-## Testing
-
-``` bash
-composer test
-```
-
-## Changelog
-
-Please see [CHANGELOG.md](./CHANGELOG.md) for more information what has changed recently.
-
-## Security
+### Changelog
 
-If you discover any security related issues, please email `nathanael.esayeas@protonmail.com` instead of using the issue tracker.
+Please see [CHANGELOG.md](./CHANGELOG.md) for more information on what has changed recently.
 
-## Support
+### Security
 
-[[`Become a GitHub Sponsor`](https://github.com/sponsors/ghostwriter)]
+If you discover any security-related issues, please use [`Security Advisories`](https://github.com/ghostwriter/wip/security/advisories/new) instead of using the issue tracker.
 
-## Credits
+### Credits
 
 - [Nathanael Esayeas](https://github.com/ghostwriter)
-- [All Contributors](https://github.com/ghostwriter/wip/contributors)
+- [All Contributors](https://github.com/ghostwriter/psalm-plugin/contributors)
 
-## License
+### License
 
 The BSD-3-Clause. Please see [License File](./LICENSE) for more information.