Fix various jslint things
Merge pull request #27 from VMBindraban/hotfix/jslint

Fix various jslint things
Added subscribe module
Added docs for subscribe
Added empty and propertyExists method
Merge pull request #28 from RWOverdijk/master

Pubsub
Maintain credit count
Merge pull request #29 from RWOverdijk/feature/maintain-credits

Maintain credit count
Remove reference
Ups
Merge pull request #30 from VMBindraban/hotifix/remove-reference-sails

Remove reference