(#2308) - update bluebird dep
(#2281) - fix kill command at test end

Dumb mistake I made here; you can't kill
pouchdb-server if it's not running.
(#2303) - use utils.uuid() for post()
(#2293) - Check if database is closed before running operations on it.
(pouchdb/mapreduce#161) - migration test for viewCleanup fix
(pouchdb/express-pouchdb#43) - add replication id event
(#2214) - upgrade browserify and mkdirp