rvagg/node-level-ttl — pull request #7 by mafintosh (2014-04-30 16:44:35+00:00)
Title: unref ttl interval to not hang

This PR calls `unref` on the interval object. This result of this that the process shouldn't hang even if `stop` isn't called. It is guarded since `unref` is a newish addition to node.