parts: Added SSD1306 OLED driver virtual part
examples: Added SSD1306 example board

atmega32_ssd1306.c 	Example avr firmware
ssd1306.*		SSD1306 avr driver
images.*		simavr logo used in example firmware
ssd1306demo.c		simavr demo for ssd1306 part
Merge pull request #77 from dougszumski/ssd1306_demo

New part & example for a SSD1306 OLED driver