gistfile1.rb

BackchatIO("firstbox", :api_key => "the_key").each do |message|
  # do stuff with message here
end

def BackchatIO(name, params) 
  Backchat::Stream.new(name, params)
end

module Backchat
  class Stream(name, params)
    # wrap fetcher here
    def each(&b)
      fetcher.listen(stream_params, &b)
    end
  end
end