class Lookbook::Reloaders

def add(name, directories, extensions, &callback)
  reloader = Reloader.new(name, directories, extensions, &callback)
  reloaders.push(reloader)
  if Engine.reloading?
    Rails.application.reloaders << reloader
    Rails.application.reloader.to_run { reloader.execute_if_updated }
  end
end