Getting:

[!] Error: Cannot find module 'rollup-plugin-livereload'

needs that dependancy in package.json.

This is very useful and simple build tool for non-SPA apps.
But production build, don't minifies js. In line 43 of rollup.config.js, you forgot to pass butternut as function, simply add () like:
config.plugins.push(butternut())

But anyway this is very helpful and useful.

This template is awesome! Thanks a bunch for putting it together. As I was using it, I noticed I wasn't getting the Vue devtools because it was always building for production. I think it would be helpful to modify the rollup config to do something like this:

replace({
    'process.env.NODE_ENV': production ? '"production"' : '"development"',
}),

Cheers!