Create sponsoring.md

doc/sponsoring.md

@@ -0,0 +1,17 @@
+# Sponsoring the project
+
+All development on this firmware is done for the greater good of mankind.
+You can use it for free. However, if you do feel the uncontrollable urge
+to contribute financially to the project, you can do so through
+[this PayPal link](https://www.paypal.com/paypalme/bedsidelamp2).
+
+This account is used for acquiring hardware and software licenses that
+I use for my open source development. Specific hardware that I bought for
+this project were:
+
+* An extra lamp for development and testing, so I don't annoy my wife
+  with buggy deployements ;-)
+* A dedicated serial to USB adapter, connected to the development lamp.
+* a simple 8 port logic analyzer that helped me with reverse engineering
+  the I2C protocol of the front panel.
+* Various wires and buttons.