Merge pull request #22 from cyrille-leclerc/master

merge
Merge pull request #23 from cyrille-leclerc/master

enhance demo
Merge pull request #24 from cyrille-leclerc/master

enhance demo
Merge pull request #25 from cyrille-leclerc/master

Enhance demo - add "buy cocktail" feature
Merge pull request #26 from cyrille-leclerc/master

enhance demo
Merge pull request #27 from cyrille-leclerc/master

enhance demo
Merge pull request #28 from cyrille-leclerc/master

Enhance demo + graphite data injector
Merge pull request #5 from jmxtrans/master

merge