Announcing web version

[lyrixx]

Hello,

I would like to inform you I wrapped your library in a Web Application: https://lyrixx.github.io/composer-diff/

I don't know if you want to, But it could be nice to add it to the README.md

WDYT?

[IonBazan]

This is great for using it on the go, when you don't have PHP installed 👍🏻
Added to the readme 🙇‍♂