Sinatra Setup w/ Rack-livereload and Guard

devserver.rb

require "sinatra"
require 'rack-livereload'

use Rack::LiveReload, :host => "localhost"

PUBLIC_DIR = "public"

set :public_folder, PUBLIC_DIR

get '/' do
  send_file File.join(PUBLIC_DIR, "index.html")
end

Gemfile

source "https://rubygems.org"

gem 'guard'
gem 'guard-livereload'
gem 'rack-livereload'

Guardfile

# A sample Guardfile
# More info at https://github.com/guard/guard#readme

guard 'livereload' do
  watch( /^public\/(.*)/ )
end