IMPORTANT:• This is an extension for DashClock Widget (http://goo.gl/WY8yBD), not a stand-alone app• The app is only available for Android 4.3+ since it depends on the notification access feature that was introduced in Android 4.3.
Setup:1. Install DashClock Widget (http://goo.gl/WY8yBD)2. Add an instance of DashClock Widget to your lock screen or home screen 3. Open DashClock settings and add the extension "Hangouts"4. Open the extension's settings from DashClock settings and tap to enable "Notification access"
If you run into problems, feel free to contact me via email.