Update read me

README.txt

@@ -1,3 +1,10 @@
+This is a fork of the RGBmatrixPanelDue library by avriot (http://avriot.com/?p=393), which in turn is partly based on the adafruit RGB-matrix-panel library which can be found at https://github.com/adafruit/RGB-matrix-Panel.
+
+Neither of the original libraries contain any license information, but my own hacky changes can be considered MIT-licensed, i.e. don't blame me if my code breaks your matrix/computer/dog/house.
+
+
+Original readme:
+========
 This is an Arduino library for our 16x32 RGB LED matrix panels
 
 Pick one up at http://www.adafruit.com/products/420 !