remove todo to make travis happy

Author: ladyada

README.rst

@@ -29,7 +29,23 @@ This is easily achieved by downloading
 Usage Example
 =============
 
-.. todo:: Add a quick, simple example. It and other examples should live in the examples folder and be included in docs/examples.rst.
+.. code-block:: python
+
+	import time
+	import board
+	import busio
+	import adafruit_us100
+
+	uart = busio.UART(board.TX, board.RX, baudrate=9600)
+	# Create a US-100 module instance.
+	us100 = adafruit_us100.US100(uart)
+
+	while True:
+	    print("-----")
+	    print("Temperature: ", us100.temperature)
+	    print("Distance: ", us100.distance)
+	    time.sleep(0.5)
+
 
 Contributing
 ============