add v2 changelog

README.md

@@ -63,6 +63,19 @@ design choice
 changelog
 =========
 
+v2
+--
+
+in v1 I mixed the LEDs for OTG and B-CHRG.
+I used the opportunity to improve on other aspects:
+
+- the USB A is shifted to the left to cover mouse bites
+- the USB micro-B can be shifted a bit to the bottom to allow for large plug assemblies
+- the white OTG LED was too bright
+- the green LED was too bright
+- the blue LED was too dim
+- the QR code is white solder mask on green silk screen can't be read by all readers because it's inverted
+
 v1
 --