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'
Merge branch 'release/1.1.6' into develop
Adding global suffixes
v1.1.7
Merge branch 'release/1.1.7'
Merge branch 'release/1.1.7' into develop
Make sure globalSuffix is undefined when not used.

Otherwise, StatsD will create metrics like '.../metric/rate/.wsp'
instead of '.../metric/rate.wsp'.
Merge pull request #32 from mailgun/global-suffix-undefined

Make sure globalSuffix is undefined when not used.
v1.1.8
Merge branch 'release/1.1.8'
Merge branch 'release/1.1.8' into develop
introduce nodejs_bin to replace inheritance of nodejs_dir, backwards compatible
Merge branch 'heyinc-nodejs_binary' into develop
v1.1.9