// Collect post processes the channel "Results" and calls the ResultProcessorFunc passed in as reference
// for further processing.
func (m *Manager) Collect(proc ResultProcessorFunc) {
	for result := range m.results {
	    outcome := proc(result)
	    fmt.Printf("Job with id: [%d] completed, outcome: %s", result.job.id, outcome)
	}
	m.done <- true
}