Add 0.12 release blog post

source/_components/notify.google_voice.markdown

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+---
+layout: component
+title: "Google Voice SMS"
+description: "Instructions how to add user notifications to Home Assistant."
+date: 2016-01-29
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: google_voice.png
+ha_category: Notifications
+featured: true
+---
+
+[Google Voice](https://www.google.com/voice) is a free service, that allows sending of SMS messages to mobile phones.
+
+### Configuration
+
+```yaml
+# Example configuration.yaml entry
+notify:
+  platform: googlevoice
+  username: YOUR_GOOGLE_EMAIL
+  password: YOUR_GOOGLE_PASSWORD
+  # Optional
+  name: NOTIFIER_NAME
+```
+
+Configuration variables:
+
+- **username** (*Required*): Enter your the Google email address you have signed up for Google Voice with. Go to https://www.google.com/voice to setup your Google Voice account.
+- **password** (*Required*): Enter the password associated with the above email. Go to https://www.pushbullet.com/ to retrieve your API key.
+- **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`.
+
+### Usage
+
+Google Voice is a notify platform and thus can be controlled by calling the notify service [as described here](/components/notify/). It will send a notification to all devices listed in the notification **target**.