class Sinatra::Default

def render(engine, template, options={}, locals={}, &bk)
  if options.key?(:views_directory)
    sinatra_warn "The :views_directory option is deprecated; use :views instead."
    options[:views] = options.delete(:views_directory)
  end
  [:options, engine.to_sym].each do |key|
    if options.key?(key)
      sinatra_warn "Passing :#{key} => {} to #{engine} is deprecated; " +
                   "merge options directly into hash instead."
      options.merge! options.delete(key)
    end
  end
  super(engine, template, options, locals, &bk)
end