Updated README

README.md

@@ -10,7 +10,7 @@ The room should be ventilated as soon as one LED turns red.
 
 Ampel-firmware + [IotWebConf](https://github.com/prampec/IotWebConf).
 
-This is beta software, and bugs are expected!
+This is beta software, and bugs are expected! There is not much free RAM left on ESP8266, so the ESP might crash randomly. :-/
 
 * You probably need to update `config.h`. There's a new template in `config.public.h`.
 * Every parameter can be set in the web-configuration, so you don't have to modify `config.h` once it's been updated.