How can I modify the "Playlist" Storymap to include a basemap switching widget?

Discussion created by btelliot on Feb 27, 2014
I'm fairly new to HTML and Javascript.  I would like to modify the default "playlist" storymap template to include a basemap gallery widget.  Can someone help break down the steps to do this?

This is what the default template looks like:

Here is an example of the modified playlist template with the basemap gallery widget.

Thank you for your time!