docs: improve README and add contributing guide

Author: jkyberneees

CONTRIBUTING.md

@@ -0,0 +1,26 @@
+# Contributing
+
+Thank you for considering contributing to **0http**!
+
+## Development setup
+
+1. Fork this repository and create a feature branch.
+2. Install dependencies:
+
+   ```bash
+   npm install
+   ```
+
+3. Run the test suite:
+
+   ```bash
+   npm test
+   ```
+
+4. Format the codebase before submitting your pull request:
+
+   ```bash
+   npm run format
+   ```
+
+Feel free to open an issue or pull request if you have suggestions or fixes.

README.md

@@ -11,10 +11,18 @@ Zero friction HTTP framework:
 - Tweaked Node.js HTTP server for high throughput.
 - High-performance and customizable request routers. 
 
-![Performance Benchmarks](docs/Benchmarks.png) 
+![Performance Benchmarks](docs/Benchmarks.png)
 
 > Check it yourself: https://web-frameworks-benchmark.netlify.app/result?f=feathersjs,0http,koa,fastify,nestjs-express,express,sails,nestjs-fastify,restana
 
+## Installation
+
+Install the package from npm:
+
+```bash
+npm install 0http
+```
+
 ## Usage
 ```js
 const cero = require('0http')
@@ -41,4 +49,4 @@ You can support the maintenance of this project:
 - [TRON](https://www.binance.com/en/buy-TRON) Wallet: `TJ5Bbf9v4kpptnRsePXYDvnYcYrS5Tyxus`
 
 # More
-- Website and documentation: https://0http.21no.de
+- Website and documentation: https://0http.21no.de