Merge pull request #30 from adafruit/stemma_i2c

Added commented out board.STEMMA_I2C with explanation

Author: evaherrada

examples/displayio_ssd1306_featherwing.py

@@ -14,7 +14,8 @@
 
 displayio.release_displays()
 
-i2c = board.I2C()
+i2c = board.I2C()  # uses board.SCL and board.SDA
+# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
 display_bus = displayio.I2CDisplay(i2c, device_address=0x3C)
 display = adafruit_displayio_ssd1306.SSD1306(display_bus, width=128, height=32)
 

examples/displayio_ssd1306_simpletest.py

@@ -17,7 +17,8 @@
 oled_reset = board.D9
 
 # Use for I2C
-i2c = board.I2C()
+i2c = board.I2C()  # uses board.SCL and board.SDA
+# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
 display_bus = displayio.I2CDisplay(i2c, device_address=0x3C, reset=oled_reset)
 
 # Use for SPI