Docs updates: add installing, advanced recipes, remote gpio and remote recipes - wip

docs/recipes_remote_gpio.rst

@@ -0,0 +1,45 @@
+===================
+Remote GPIO Recipes
+===================
+
+.. currentmodule:: gpiozero
+
+The following recipes demonstrate some of the capabilities of the feature of the
+GPIO Zero library. Before you start following these examples, please read up on
+preparing your Pi and your host PC to work with :doc:`remote_gpio`.
+
+Please note that all recipes are written assuming Python 3. Recipes *may* work
+under Python 2, but no guarantees!
+
+LED + Button
+============
+
+Let a button on one Raspberry Pi control the LED of another:
+
+.. literalinclude:: examples/led_button_remote_1.py
+
+LED + 2 Buttons
+===============
+
+The LED will come on when both buttons are pressed:
+
+.. literalinclude:: examples/led_button_remote_2.py
+
+Multi-room motion alert
+=======================
+
+Install a Raspberry Pi with a motion sensor in each room of your house, and have
+an LED indicator showing when there's motion in each room:
+
+.. literalinclude:: examples/multi_room_motion_alert.py
+
+Multi-room doorbell
+===================
+
+Install a Raspberry Pi with a buzzer attached in each room you want to hear the
+doorbell, and use a push button ad the doorbell::
+
+.. literalinclude:: examples/multi_room_doorbell.py
+
+This could also be used as an internal doorbell (tell people it's time for
+dinner from the kitchen).