Update README.md

Author: TheKitty

ESP8266_Weather_Pixels/README.md

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-# Weather-Pixels
-Code for PaintYourDragon's weather-reactive neopixels
+## Feather Weather Lamp Tutorial Code
+
+The files in this repository accompanied an [Adafruit Learning System](https://learn.adafruit.com) tutorial https://learn.adafruit.com/feather-weather-lamp/
+
+This code was formerly at https://github.com/adafruit/Weather-Pixels - this has now been archived.
+
+If you are looking to make changes/additions, please use the GitHub Issues and Pull Request mechanisms.
+
+All code MIT License, please attribute to Adafruit Industries
+
+Please consider buying your parts at [Adafruit.com](https://www.adafruit.com) to support open source code
+