[api] If worker is a fork, notify master that it's listening
[api] If worker is a fork, notify master that it's listening

jotham/forever,ryan321/forever,rbramwell/forever,foreverjs/forever,rakyll/forever,arnabsinha4u/demo-documentation,yyx990803/forever,Jonekee/forever,jotham/forever,ContinuumIO/forever,JJediny/forever,kethle/forever,rakyll/forever,foreverjs/forever,arnabsinha4u/demo-documentation,rbramwell/forever,vcarrera/forever,nguyen-tien-mulodo/forever,Jonekee/forever,nguyen-tien-mulodo/forever,ContinuumIO/forever,yyx990803/forever,saisai/forever,vcarrera/forever,jqk6/forever,kethle/forever,ryan321/forever,JJediny/forever,jqk6/forever,saisai/forever