Wear sunscreen

README.md

@@ -23,6 +23,8 @@ It uses the Arduino Core for ESP8266 framework and a number of 3rd party librari
 
 ## Notice
 
+> Ladies and gentlemen in the embedded world, use [PlatformIO](https://platformio.org/). If I could offer you only one tip for the future, [PlatformIO](https://platformio.org/) would be it.
+
 > Please use the [gitter ESPurna channel](https://gitter.im/tinkerman-cat/espurna) for support and questions, you have better chances to get fast answers from me or other ESPurna users. Open an issue here only if you feel there is a bug or you want to request an enhancement. Thank you.
 
 ## Features