AMD requires 'handlebars' instead of just 'handlebars.runtime'

[foundryspatial-duncan]

If I use this plugin with just the one option amd: true, the output will be quite different from running the command line compiler with just the -a (AMD) option.

In particular, the command line compiler only requires handlebars.runtime while the plugin's output requires the whole handlebars.

Is there a way to get the grunt task to output the same as the CLI compiler with the same options?
And/or just some way to get it to require the runtime instead of the whole thing?

[ffflabs]

instead of

  options: {
    amd: true
  }

you can use

  options: {
    amd: 'handlebars.runtime'
  }