def pop(count = nil)
      jids = JSON.parse(@client.call('pop', @name, worker_name, (count || 1)))
      jobs = jids.map { |j| Job.new(@client, j) }
      count.nil? ? jobs[0] : jobs
    end
def pop(count = nil)
      jids = JSON.parse(@client.call('pop', @name, worker_name, (count || 1)))
      jobs = jids.map { |j| Job.new(@client, j) }
      count.nil? ? jobs[0] : jobs
    end
Pop a work item off the queue