use correct engine.io version

Conflicts:

	package.json
bump to 0.0.5
set expire before callback
tests for api setStatus, getMessage, setMessage
Guards against undefined maxPersistence
fix api to use policy on setStatus
test fix
Merge pull request #12 from zendesk/vanchi/fix_setStatusApi

Vanchi/fix set status api
v0.0.6
Merge remote-tracking branch 'upstream/master'