Update getting_started.md
Update getting_started.md

hj3938/ringpop,esatterwhite/skyring,uber/ringpop,sasa233/ringpop,uber-node/ringpop-node,uber/ringpop-node,uber/ringpop-node,esatterwhite/skyring,tomasdiez/ringpop,Collin-V/ringpop,uber-node/ringpop-node,hotrannam/ringpop