Merge branch 'release/1.1.5' into develop
Allow configuring dumpMessages through node attribute

When debugging statsd (specifically logstash output) I have found
it useful to keep dumpMessages on.
Merge pull request #30 from tildedave/enable_dump_messages_as_part_of_configuration

Allow configuring dumpMessages through node attribute.
Update pointers to Vagrant boxes used in test suite.
Adding dump_messages attribute to README.
v1.1.6
Merge branch 'release/1.1.6' into develop
support statsD backend
Merge branch 'temp'