Rename to gpiozero and tidy up

gpiozero/__init__.py

@@ -0,0 +1,20 @@
+from __future__ import absolute_import
+from RPi import GPIO
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+
+from .input_devices import (
+    InputDeviceError,
+    InputDevice,
+    Button,
+    MotionSensor,
+    LightSensor,
+    TemperatureSensor,
+)
+from .output_devices import (
+    OutputDevice,
+    LED,
+    Buzzer,
+    Motor,
+)