Add config sample for exp3
Add config sample for exp3

rimms/jubatus,roselleebarle04/jubatus,jubatus/jubatus,gintenlabo/jubatus,roselleebarle04/jubatus,elkingtonmcb/jubatus,mathn/jubatus,rimms/jubatus,jubatus/jubatus,mathn/jubatus,elkingtonmcb/jubatus,jubatus/jubatus,gintenlabo/jubatus