Add tellstick sensor page

source/components/sensor.tellstick.markdown

@@ -0,0 +1,34 @@
+---
+layout: page
+title: "TellStick sensors support"
+description: "Instructions how to integrate TellStick sensors into Home Assistant."
+date: 2015-08-06 19:00
+sidebar: false
+comments: false
+sharing: true
+footer: true
+---
+
+<img src='/images/supported_brands/telldus_tellstick.png' class='brand pull-right' />
+This tellstick sensor platform allows you to get current meteorological data from a [TellStick](http://www.telldus.se/products/tellstick) device.
+
+To use your TellStick device in your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  platform: tellstick
+  135: Outside
+  21: Inside
+  only_named: True
+  temperature_scale: "°C"
+  datatype_mask: 1
+```
+
+Configuration variables:
+
+- **ID: Name** *Optional*: Entry for a sensor with the name for it and its ID.
+- **only_named** *Optional*: Only show the named sensors. Set to `True` to hide sensors.
+- **temperature_scale** *Optional*: The scale of the temperature value.
+- **datatype_mask** *Optional*: Mask to determine which sensor values to show based on. Please check the [TellCore tellcore.constants documentation](https://tellcore-py.readthedocs.org/en/v1.1.2/constants.html#module-tellcore.constants) for details.
+