Added Trello backend docs

docs/source/backends.rst

@@ -49,6 +49,7 @@ Backends
     platypush/backend/sensor.serial.rst
     platypush/backend/tcp.rst
     platypush/backend/todoist.rst
+    platypush/backend/trello.rst
     platypush/backend/weather.buienradar.rst
     platypush/backend/weather.darksky.rst
     platypush/backend/websocket.rst

docs/source/events.rst

@@ -45,6 +45,7 @@ Events
     platypush/events/sound.rst
     platypush/events/todoist.rst
     platypush/events/torrent.rst
+    platypush/events/trello.rst
     platypush/events/video.rst
     platypush/events/weather.rst
     platypush/events/web.rst

docs/source/platypush/backend/trello.rst

@@ -0,0 +1,5 @@
+``platypush.backend.trello``
+============================
+
+.. automodule:: platypush.backend.trello
+    :members:

docs/source/platypush/events/trello.rst

@@ -0,0 +1,5 @@
+``platypush.message.event.trello``
+==================================
+
+.. automodule:: platypush.message.event.trello
+    :members: