Added group endpoint and individual groups endpoints
Added require line to projects file
Merge pull request #75 from benSlaughter/group-management

Added group endpoint and individual groups endpoints
Merge branch 'master' into staging
Added missing include for the groups module
Update multi_json to current version
Updated development gems rspec and coveralls to latest versions
Updated version to 6.4.0 and date in gemspec
Merge pull request #77 from jonathanchrisp/staging

Version 6.4.0