Plots with the GR backend works on Travis without much setup (it does throw a fair amount of warnings during the Travis build but they seem harmless) and is able to save plots as pngs. Here there’s an example (and here is the corresponding markdown).
Of course I can’t speak for other people but I personally think that it would be a very neat feature to be able to do that. There are some use cases of generating a markdown from a Julia scripts that do not belong to the documentation of a package:
- Hugo/Jekyll to create a blog post
- Remark to create a slideshow (see this discussion).
I’m not sure I understand Literate well enough to contribute on the “execute code in the markdown” part, but once that exists I’ll be happy to contribute the integration with Remark to create slideshows (should actually be pretty straightforward).
EDIT: added here a tiny Remark.jl package to create the presentation from the markdown.