dancedric

This plugin allows you to have a “Live” badge in your website when streaming with Twitch. 
The texts and colors are customizable!
You will need a Twitch account and a Client ID. 
There will be instructions in the plugin on how you can obtain/generate your Client ID in Twitch.
Note: 
Once you have configured everything, you should know that there is ~ 3-5 minute delay when you’re going in and out of live in Twitch.
After configuration, you can display the badge in your website via Widgets.

Live Stream Badge

Display a "Live" badge as a widget in your website when streaming with Twitch.

PC Gamer Girl

Alert visitors to your live Twitch stream with an unobtrusive popup alert. Please note – this plugin will ONLY display an alert when your Twitch.TV stream is active!

Bait Stream for Twitch TV

Alert visitors to your live Twitch stream with an unobtrusive popup alert. Please note - this plugin will ONLY display an alert when your Twitch.

Live Stream Badge vs Bait Stream for Twitch TV