Ruby 1.8.7 does not include json, adding dependency to bring back 1.8.7 compatibility
Require set, not requiring set breaks when using this gem without bundler
Log SDK version at info level on startup to help debug SDK issues
force minitest >= 5.0.6 as tests fail in some lower versions
bump version
Merge pull request #23 from newrelic-platform/nathan/bugfix

Nathan/bugfix