add params to docstring

Author: caternuson

adafruit_nunchuk.py

@@ -35,7 +35,17 @@
 
 
 class Nunchuk:
-    """Class which provides interface to Nintendo Nunchuk controller."""
+    """
+    Class which provides interface to Nintendo Nunchuk controller.
+
+    :param i2c: The `busio.I2C` object to use.
+    :param int address: (optional) The I2C address of the device.
+    Default is 0x52.
+    :param float i2c_read_delay: (optional) The time in seconds to pause
+    between the I2C write and read. This needs to be at least 200us. A
+    conservative default of 2000us is used since some hosts may not be
+    able to achieve such timing.
+    """
 
     def __init__(self, i2c, address=0x52, i2c_read_delay=0.002):
         self.buffer = bytearray(8)