added gex config for completeness

UNITS.INI

@@ -0,0 +1,58 @@
+## UNITS.INI
+## GEX v0.0.1 on STM32F072-Discovery
+## built Feb  9 2018 at 20:10:56
+
+# Overwrite this file to change settings.
+# Press the LOCK button to save them to Flash.
+
+[UNITS]
+# Create units by adding their names next to a type (e.g. PIN=A,B),
+# remove the same way. Reload to update the unit sections below.
+
+# Digital output
+DO=
+
+# Digital input with triggers
+DI=btn
+
+# Neopixel RGB LED strip
+NPX=neo
+
+# I2C master
+I2C=
+
+# SPI master
+SPI=
+
+# Serial port
+USART=
+
+# 1-Wire master
+1WIRE=
+
+# Analog/digital converter
+ADC=
+
+[DI:btn@1]
+# Port name
+port=B
+# Pins (comma separated, supports ranges)
+pins=9
+# Pins with pull-up
+pull-up=9
+# Pins with pull-down
+pull-down=
+
+# Trigger pins activated by rising/falling edge
+trig-rise=
+trig-fall=9
+# Trigger pins auto-armed by default
+auto-trigger=9
+# Triggers hold-off time (ms)
+hold-off=200
+
+[NPX:neo@2]
+# Data pin
+pin=B8
+# Number of pixels
+pixels=30