update readme (fixes
indoor navigation for events. See it live at [c3nav.de](https://c3nav.de/).
-**c3nav is currently in development for the 35c3. Documentation for the current state will follow and is currently not available. Sorry.**
+**Documentation for the current state will follow and is currently not available. Sorry. Please to not refer to old documentation and report bugs about it not being accurate.**
*Please note that this project is released with a [Code of Conduct](CODE_OF_CONDUCT.md) that applies to all project-related communication. By participating in this project you agree to abide by its terms.*
