Adding an example (adafruit/circuitpython#493)

Author: Sigafoos

examples/display_temperature.py

@@ -0,0 +1,22 @@
+import adafruit_thermistor
+import board
+import time
+
+# these values work with the Adafruit CircuitPlayground Express.
+# they may work with other thermistors as well, as they're fairly standard,
+# though the pin will likely need to change (ie board.A1)
+pin = board.TEMPERATURE
+series_resistor = 10000
+nominal_resistance = 10000
+nominal_temperature = 25
+b_coefficient = 3950
+high_side_bool = True
+
+thermistor = adafruit_thermistor.Thermistor(pin, series_resistor, nominal_resistance, nominal_temperature, b_coefficient, high_side=high_side_bool)
+
+# print the temperature in C and F to the serial console every second
+while True:
+    celsius = thermistor.temperature
+    fahrenheit = (celsius * 9 / 5) + 32
+    print('== Temperature ==\n{} *C\n{} *F\n'.format(celsius, fahrenheit))
+    time.sleep(1)