rmarkdown integration

[cpsievert]

It'd be neat to embed dashR apps inside rmarkdown (via runtime: dashR) similar to how one can embed shiny apps via runtime: shiny.

[rpkyle]

It'd be neat to embed dashR apps inside rmarkdown (via runtime: dashR) similar to how one can embed shiny apps via runtime: shiny.

@nicolaskruchten @alexcjohnson I realize this is not a parity-related feature, but I think it would be a great addition to the Dash for R feature set.

[rpkyle]

@sacul-git It would be good to document the work you've already done so we can evaluate where this issue stands, and maybe try to write up a quick demo (if it makes sense to do so).

[sacul-git]

@rpkyle I wrote a demo document here that includes a dash app as an iframe in an rmd. It doesn't work when using Rstudio's preview window, but works fine in a browser. It would definitely be nicer to be able to include runtime: dashR in the yaml header, and skip the whole iframe process.