NIFI-187: Fixed bug that prevents nifi from shutting down properly when RemoteProcessGroup is present on graph
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-nifi into develop
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-nifi into develop
Updated user guide