App add cluster#81

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hyeongyun0916 wants to merge 3 commits intomasterfrom

app-add-cluster

Commits on Aug 12, 2017

run with master cluster & worker
donnaknew
committed

Commits on Aug 15, 2017

add command 'quit' -> shutdown server, 'kill' -> for test now, 'list' -> cluster worker pid list, 'detail' -> cluster worker detail list
donnaknew
committed
add force quit, quit! & quit, quit command
donnaknew
committed