ruby-band basic

app.rb

require 'sinatra'
require 'ruby-band'

class App < Sinatra::Base
  get '/' do
    [200, 'Hello, World!']
  end
end

config.ru

require_relative 'app'

run App

config_warble.rb

Warbler::Config.new do |config|
  config.features = %w(gemjar compiled)
  config.dirs = %w(config tmp vendor)
  config.includes = FileList["config.ru", "app.rb"]
end

Gemfile

source 'https://rubygems.org'

gem 'sinatra'
gem 'ruby-band'