Add documentation for pushsafer notifications service (#2071)

* Add files via upload

* Add files via upload

* Update notify.pushsafer.markdown

source/_components/notify.pushsafer.markdown

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+---
+layout: page
+title: "Pushsafer"
+description: "Instructions how to add Pushsafer notifications to Home Assistant."
+date: 2017-02-17 20:46
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: pushsafer.png
+ha_category: Notifications
+ha_release: pre 0.7
+---
+
+
+The [Pushsafer service](https://www.pushsafer.com/) is a platform for the notify component. This allows components to send messages to the user using Pushsafer.
+
+In order to get an private or alias key you need to go to the [Pushsafer website](https://www.pushsafer.com) and register.
+
+To use Pushsafer notifications, add the following to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+notify:
+  - name: NOTIFIER_NAME
+    platform: pushsafer
+    private_key: ABCDEFGHJKLMNOPQRSTUVXYZ
+```
+
+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`.
+- **private_key** (*Required*): Your private or alias key. Private key = send the notification to all devices with standard params, alias key send the notification to the devices stored in the alias with predefined params.
+
+When setting up the application you can use this [icon](https://home-assistant.io/images/favicon-192x192.png).
+
+To use notifications, please see the [getting started with automation page](/getting-started/automation/).