Update README.md

Author: mossc001

README.md

@@ -14,3 +14,6 @@
 6. Unplug your ESP from your computer, and plug it in again. Got to the Webpage of the ESP via it's DHCP IP and verify the upload is successful.
 
 If the above does not work correctly, try again as Windows may still be installing the drivers for the ESP COM port.
+
+## Credits:
+https://github.com/visualapproach for the original Lay-Z-Spa build.