These are my two spec_helper files for the suite

acceptance_spec_helper.rb

require "capybara/rspec"
require 'rspec/example_steps'
require File.expand_path(File.dirname(__FILE__) + "/../spec_helper")
require File.expand_path(File.dirname(__FILE__) + "/support/helpers")
require File.expand_path(File.dirname(__FILE__) + "/support/paths")
Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each {|f| require f}

include ApplicationHelper
include HelperMethods
include FacebookAuthHelper
include NavigationHelpers

include Warden::Test::Helpers
Warden.test_mode!

DatabaseCleaner.strategy = :truncation
Capybara.default_selector = :css
Capybara.save_and_open_page_path = File.expand_path(File.dirname(__FILE__) + "/../tmp/")
Capybara.default_wait_time = 35.
Capybara.server_port = 8888 + ENV['TEST_ENV_NUMBER'].to_i

RSpec.configure do |config|
  config.include Capybara::DSL
  Capybara.server_boot_timeout = 50
  config.use_transactional_fixtures = false

  DatabaseCleaner.clean

  config.before(:each) do
    Capybara.server_boot_timeout = 50
    if example.options[:js]
      Capybara.current_driver = :selenium
      Capybara.current_session.driver.browser.manage.window.resize_to(1600,1200)
    end
  end

  config.after(:each) do
    Capybara.use_default_driver if example.options[:js]
    Warden.test_reset!
  end
end

spec_helper.rb

require 'database_cleaner'
require 'factory_girl'
require 'timecop'
require 'webmock/rspec'
require "paperclip/matchers"
require 'vcr'

WebMock.disable_net_connect!(:allow_localhost => true)

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] = 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'

DatabaseCleaner.strategy = :transaction

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

RSpec.configure do |config|
  config.mock_with :rspec
  config.include Paperclip::Shoulda::Matchers
  config.include Devise::TestHelpers, :type => :controller

  config.before(:each) do
    #clear_redis_queues
    #Resque::Delayed.clear
    DatabaseCleaner.start
  end

  config.after(:each) do
    Timecop.return
    DatabaseCleaner.clean
  end

  config.include(EmailSpec::Helpers)
  config.include(EmailSpec::Matchers)
end

Resque.inline = false