Merge pull request #24 from adafruit/stemma_i2c

Added commented out board.STEMMA_I2C with explanation

Author: evaherrada

examples/vcnl4010_simpletest.py

@@ -8,7 +8,8 @@
 import adafruit_vcnl4010
 
 
-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
 sensor = adafruit_vcnl4010.VCNL4010(i2c)
 
 # You can optionally adjust the sensor LED current.  The default is 200mA