Adafruit_SSD1306 library ported for Spark by Paul Kourany, Mar 18, 2014
SSD1306 128x64 Wiring guide
// If using software SPI (the default case):
#define OLED_MOSI D0
#define OLED_CLK D1
#define OLED_DC D2
#define OLED_CS D3
#define OLED_RESET D4
Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);