add makefile for atmega firmware mgmt

.gitignore

@@ -0,0 +1 @@
+build/*

Makefile

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+prepare:
+	mkdir -p build
+
+clean: prepare
+	rm -fr build/*
+
+compile: clean
+	avr-gcc -Og -g -mmcu=atmega168 -o build/main src/*.c 
+
+build: compile 
+	avr-objcopy -j .text -j .data -O ihex build/main build/main.hex
+
+flash: 
+	avrdude -P usb -b 19200 -c avrispmkII -p m168 -U lfuse:w:0xee:m -U hfuse:w:0xdf:m -U efuse:w:0xf9:m -U flash:w:build/main.hex

README.md

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 # ErgoDox-EZ
-ErgoDox EZ LED mod
+
+[ErgoDox EZ](https://ergodox-ez.com/) LED mod to convert your regular ErgoDox EZ into an ErgoDox EZ shine. 
+
+## Firmware
+
+Once you've connected your Atmega168 you can compile the firmware and flash your microcontroller with the included makefile:
+
+```
+$ make build
+$ make flash
+```
+
+The makefile is setup to use the AVR ISP MKII.