Notifies you when one of the streamers you are following starts streaming.
All that you need to do to get started is to put your twitch username in the username field on the options page. A link to the option page can be found under "Tools" > "Extensions" > "Twitch notifications".
Clicking a notification will open the stream in a new tab.
The source is on github: https://github.com/mickelus/twitchNotifications.
Feel free to submit bug reports, feature requests or pull requests.