Need a way to document page title and npm installation instructions but not show a module for features that are purely CSS

[Blackbaud-AlexKingman]

For example, how would we document buttons?

<sky-docs-demo-page
  moduleName="???"
  moduleSourceCodePath="???"
  pageTitle="Buttons"
>

Should we make these properties optional or have a different "type" that renders the sky-docs-demo-page section differently?

[blackbaud-johnly]

Status indicator is another example, and it's currently missing the Installation section. We have a docs issue for that, but we probably want to hold off on addressing it until we figure this issue out.