added configuration help

source/components/tellstick.markdown

@@ -0,0 +1,34 @@
+---
+layout: page
+title: "Setting up TellStick"
+description: "Instructions how to integrate your TellStick into Home Assistant."
+date: 2015-03-28 13:06
+sidebar: false
+comments: false
+sharing: true
+footer: true
+---
+
+The TellStick Home Assistant integration allows users to add switches and sensors.
+
+To get started, add the following information to your `configuration.yaml`:
+
+```YAML
+switch:
+  platform: tellstick
+
+sensor:
+  platform: tellstick
+
+  # optionally, you can name your sensors by mapping ID to their name
+  2: Outside
+  5: Fridge
+
+  # Set only_named to 1 to hide all sensors that you did not mention.
+  only_named: 1
+
+# All dimmers will be picked up as lights.
+light:
+  platform: tellstick
+
+```