docs: Improve README examples

[Mattis44]

Description

Enhance the README.md with more practical usage examples and better code organization.

Current State

The README has basic examples, but could benefit from more real-world scenarios.

What to add

1. Advanced Customization Examples

   • Custom styling example
   • Keyboard shortcuts configuration
   • Command categories example

2. Next.js Integration Example

   • How to use with Next.js App Router
   • How to use with Next.js Pages Router

3. Error Handling Example

   • Handling command errors
   • Loading states

4. More Installation Methods

   • yarn/pnpm examples
   • CDN usage (if applicable)

File to modify

README.md in the root directory

Code Quality

• Keep examples concise and runnable
• Use TypeScript syntax
• Add comments for clarity

Labels

good first issue, documentation, help wanted