I managed to get these working on my side (with my domain and channel). Give it a shot.
Just stream
<script src= "https://player.twitch.tv/js/embed/v1.js"></script>
<div id="twitch-embed"></div>
<script type="text/javascript">
var options = {
width: "100%",
height: "100%",
channel: "sewadaar_sangat",
parent: ["gurujisangatboston.org", "www.gurujisangatboston.org","sites.google.com",document.domain,"gstatic.com","www.gstatic.com"]
};
var player = new Twitch.Player("twitch-embed", options);
</script>
Stream & Chat
<div id="twitch-embed"></div>
<script src="https://embed.twitch.tv/embed/v1.js"></script>
<script type="text/javascript">
new Twitch.Embed("twitch-embed", {
width: "100%",
height: "100%",
channel: "sewadaar_sangat",
parent: ["gurujisangatboston.org", "www.gurujisangatboston.org","sites.google.com",document.domain,"gstatic.com","www.gstatic.com"]
});
</script>
edit: Made a YT video with this information:
https://youtu.be/jDFZncLMHEQ