Merge pull request #55 from adafruit/stemma_i2c

Added commented out board.STEMMA_I2C with explanation

Author: evaherrada

examples/bme680_simpletest.py

@@ -7,6 +7,7 @@
 
 # Create sensor object, communicating over the board's default I2C bus
 i2c = board.I2C()  # uses board.SCL and board.SDA
+# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
 bme680 = adafruit_bme680.Adafruit_BME680_I2C(i2c, debug=False)
 
 # change this to match the location's pressure (hPa) at sea level