Merge pull request adafruit#5 from tannewt/explicit_return

Add explicit return to avoid implicit None return which doesn't

Author: kattni

adafruit_irremote.py

@@ -179,6 +179,7 @@ def read_pulses(self, input_pulses, max_pulse=10000):
                     else:
                         return received
                 received.append(pulse)
+        return received
 
 class GenericTransmit:
     """Generic infrared transmit class that handles encoding."""