Sample story input here: ge_back_for_teatime.yaml (generated file here). It's intended to be generated by script (as a result of a web form submission), but is simple enough to be written by hand. Which is what I did for all my stories. Note that the body content is in markdown format. See also a more complex example (generated file here).
It's almost general enough to handle generating the buffygiles.com site. The problem with that site remains, as ever, wrangling the content into a consistent format. I'll start working on that next.