Add Flitsmeister - Update README.md

Add Flitsmeister as user of MapLibre

README.md

@@ -281,6 +281,7 @@ are designated with a ✅, and hosted projects with a 💙.
 - [Cartes](https://cartes.app) — French alternative to Google Maps based on a fully open source stack
 - [Mountaya](https://mountaya.com) - Interactive 3D maps to understand, explore, and stay safe in the mountain.
 - [Herb Atlas](https://herbatlas.fyi) ([Code](https://github.com/tinykite/herb-atlas)) - Collaborative project mapping medicinal herb farms with a focus on sustainable + regenerative practices.
+- [Flitsmeister](https://www.flitsmeister.com/) - Navigation app for Android and iOS, with real-time traffic information. Uses MapLibre Native, MapLibre Navigation.
 
 ## Demos / Examples