Embed video
YouTube videos are easy to embed into Readings or other Morea pages.
The includes directory provides a file called youtube.html that provides the boilerplate code for embedding a youtube video. You can use it to embed a YouTube video like this:
{% include youtube.html id="WEpHzPPCKJE" %}
If you need to include videos from other sources (such as Vimeo), you can write your own custom include file, using youtube.html as a basis.