Add pushetta docs

source/_components/notify.pushetta.markdown

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+---
+layout: component
+title: "Pushetta"
+description: "Instructions how to add Pushetta notifications to Home Assistant."
+date: 2015-11-10 18:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: pushetta.png
+ha_category: Notifications
+---
+
+
+The pushetta platform uses [Pushetta](http://www.pushetta.com) to delivery notifications from Home Assistant to your devices.
+
+To enable Pushetta notifications in your installation, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+notify:
+  name: NOTIFIER_NAME
+  platform: pushetta
+  api_key: YOUR_API_KEY
+  channel_name: YOUR_CHANNEL_NAME
+```
+
+Configuration variables:
+
+- **name** (*Optional*): Setting the optional parameter `name` allows multiple notifiers to be created. The default value is `notify`. The notifier will bind to the service `notify.NOTIFIER_NAME`.
+- **api_key** (*Required*): Your API key for Pushetta.
+- **channel_name** (*Required*): The name of your channel.
+
+To retrieve the API token, log into your account at http://www.pushetta.com and go to your **Dashboard**. Create a new  channel by clicking on **Channels** and then **Add a Channel**.
+
+It's easy to test your Pushetta setup outside of Home Assistant. Assuming you have a channel *home-assistant*, just fire a request and check the channel page in the dashboard for a new message.
+
+```bash
+curl -X POST \
+    -H "Authorization: Token YOUR_API_KEY" \
+    -H "Content-Type: application/json" \
+    -d "{ \"body\" : \"Hello World\", \"message_type\" : \"text/plain\" }" \
+    http://api.pushetta.com/api/pushes/home-assistant/
+```
+
+For further details, please check the [API](http://pushetta.com/pushetta-api/).
+
+To use notifications, please see the [getting started with automation page]({{site_root}}/components/automation/).