News Cycle is a little script you can embed in your web pages to turn any ordinary RSS newsfeed into a slideshow. As of 2015-10-17, it's at the prototype stage, so most customizations require manual intervention. But for simple embedding all you have to do is:
(Replace the file paths with the right ones for your server. The script must load from the same domain name as the newsfeed, so you'll have to upload it somewhere on your own website.)
<iframe src="/path/to/news-cycle.html?rss=/path/to/index.xml&items=10" width="640" height="360"></iframe>
News Cycle relies on jQuery and Cycle2, and you can have it under the same licence terms as those two libraries. Download here.