docs: code quality badge

README.md

@@ -3,12 +3,17 @@
 <img align="center" width="600px" src="https://raw.githubusercontent.com/tinyhttp/malibu/master/logo.svg" alt="Malibu" />
 <br /><br />
 
-[![npm](https://img.shields.io/npm/v/malibu?style=for-the-badge&logo=npm&label=&color=26B0A0)](https://npmjs.com/package/malibu) [![npm](https://img.shields.io/npm/dt/malibu?style=for-the-badge&color=26B0A0)](https://npmjs.com/package/malibu) [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/tinyhttp/malibu/CI?label=&logo=github&style=for-the-badge&color=26B0A0)](https://github.com/tinyhttp/malibu/actions) [![Coveralls](https://img.shields.io/coveralls/github/tinyhttp/malibu?style=for-the-badge&color=26B0A0)](https://coveralls.io/github/tinyhttp/malibu)
+[![npm](https://img.shields.io/npm/v/malibu?style=for-the-badge&logo=npm&label=&color=26B0A0)](https://npmjs.com/package/malibu) [![npm](https://img.shields.io/npm/dt/malibu?style=for-the-badge&color=26B0A0)](https://npmjs.com/package/malibu) [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/tinyhttp/malibu/CI?label=&logo=github&style=for-the-badge&color=26B0A0)](https://github.com/tinyhttp/malibu/actions) [![Coveralls](https://img.shields.io/coveralls/github/tinyhttp/malibu?style=for-the-badge&color=26B0A0)](https://coveralls.io/github/tinyhttp/malibu) [![Code Quality](https://img.shields.io/codefactor/grade/github/tinyhttp/malibu?style=for-the-badge&color=26B0A0)](https://www.codefactor.io/repository/github/aldy505/malibu)
 
 </div>
 
 This middleware helps web developers fight [CSRF](https://en.wikipedia.org/wiki/Cross-site_request_forgery) attacks. Bear in mind, by solely using this middleware, we can't guarantee your app will be free from CSRF attacks. Refer to [CSRF Prevention Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html) and [pillarjs/understanding-csrf](https://github.com/pillarjs/understanding-csrf) for more details.
 
+* ⚡ Framework agnostic (works with Express, Tinyhttp, Polka, and more!)
+* ✨ Native ESM support
+* 🛠 Typescript typings out of the box
+* 🚀 No legacy dependencies
+
 ## Install
 
 ```