Added rules endpoints
Added languages and metrics endpoints
added rules require and include
Merge pull request #66 from benSlaughter/new-rules-endpoints

Added rules endpoints
Merge pull request #67 from benSlaughter/languages-and-metrics-endpoints

Added languages and metrics endpoints
Updated gem to version 6.1.0 and date in gemspec
Merge pull request #68 from jonathanchrisp/staging

Version 6.1.0