- Include railroad.js from http://tabatkins.github.io/railroad-diagrams/
- Include railroad.css from the same, and tweak it to match my style a bit
better
- Add a railroad-utils.js file that declares a railroadDiagram function. It
takes a builder function and an element ID, calls the builder and adds the
resulting diagram to the element with the given ID.
- Add a railroad_diagram shortcode that wraps that all up so you can write a
diagram inline with a post.
- Add script includes if the railroad_diagram shortcode is used. The shortcut
sets a variable in the page's .Scratch that is looked up in the head partial
template to determine whether to include these scripts.
