def beanstalk_host_and_port(uri_string)
      uri = URI.parse(uri_string)
      raise(BadURL, uri_string) if uri.scheme != 'beanstalk'.freeze
      "#{uri.host}:#{uri.port || 11300}"
    end
Returns a host and port based on the uri_string given

@example
beanstalk_host_and_port("beanstalk://127.0.0.1") => "127.0.0.1:11300"