docs: add usage section

[Barbapapazes]

🔗 Linked issue

fix partially #62

❓ Type of change

• [x] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This PR add a usage section to the README.

📝 Checklist

• [x] I have linked an issue or discussion.
• [x] I have updated the documentation accordingly.

[codecov[bot]]

Codecov Report

Merging #70 (26a44f2) into main (f4c4447) will not change coverage. The diff coverage is n/a.

:exclamation: Current head 26a44f2 differs from pull request most recent head 99a43fc. Consider uploading reports for the commit 99a43fc to get more accurate results

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[Barbapapazes]

Maybe, I could add that positional arguments are required by default, not if there is a default value.

[Barbapapazes]

related to #73

[DanielRivers]

Love these updates! answers most of my questions I had. Merging this will help so many others.