Update README.rst and example

examples/max31865_simpletest.py

@@ -2,17 +2,20 @@
 # Will print the temperature every second.
 import time
 
-import board
-import busio
-import digitalio
-
+import machine
 import adafruit_max31865
 
 
 # Initialize SPI bus and sensor.
-spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
-cs = digitalio.DigitalInOut(board.D5)  # Chip select of the MAX31865 board.
-sensor = adafruit_max31865.MAX31865(spi, cs)
+spi=machine.SPI(
+                -1,
+                sck=machine.Pin(14, machine.Pin.OUT),
+                mosi=machine.Pin(13, machine.Pin.OUT),
+                miso=machine.Pin(12, machine.Pin.OUT)
+                )
+spi.init(baudrate=115200, polarity=0, phase=1)
+cs=machine.Pin(2)
+sensor=adafruit_max31865.MAX31865(spi, cs)
 # Note you can optionally provide the thermocouple RTD nominal, the reference
 # resistance, and the number of wires for the sensor (2 the default, 3, or 4)
 # with keyword args: