Add statpixel to bots using poise in README.md (#275)

README.md

@@ -31,6 +31,7 @@ For each bot, there's a list of notable features for you to take inspiration fro
 - [Scripty](https://github.com/scripty-bot/scripty) by [@tazz4843](https://github.com/tazz4843): localization, database, voice
 - [Etternabot](https://github.com/kangalio/Etternabot) by [@kangalio](https://github.com/kangalio): response transformation, variadic and lazy arguments
 - [Rustbot](https://github.com/rust-community-discord/ferrisbot-for-discord) by [@kangalio](https://github.com/kangalio): database, custom prefixes
+- [StatPixel](https://github.com/statpixel-rs/statpixel) by [@matteopolak](https://github.com/matteopolak): modals, buttons, dropdowns, database, localization
 
 You're welcome to add your own bot [via a PR](https://github.com/serenity-rs/poise/compare)!