GitReporting
reporter = GitReporting::Reporter.new(source: :github, login: "...", password: "...", repo: "my/repo")
reporter.build_report #=> simple report for all time
reporter.build_report(type: :timesheet) #=> report per user for all time
reporter.build_report(type: :timesheet, from: "2015-01-01", to: "2015-01-31") #=> report per user for given period
reporter.build_report(type: :timesheet, group: :week, from: "2015-01-01", to: "2015-01-31") #=> report per user for given period groupped by week
More docs are coming.