S3 upload with EventMachine and happening

gistfile1.rb

require 'happening'

EM.run do 
  EventMachine::add_periodic_timer(1) { print "." }

  item = Happening::S3::Item.new('my_bucket', 
                                 "22mb_file", 
                                 :aws_access_key_id => 'MY_ACCESS_KEY', 
                                 :aws_secret_access_key => 'my_secret_key', 
                                 :permissions => 'public-read')
  item.put File.read("/tmp/22mb_file") do |response|
    puts "Finished"
    EM.stop
  end
end