Local heartbeat
* Now it is possible to specify a group to a service
* Bugfix: Ftp methods were note prototype methods
* Uncaught exception now prints stacktrace instead of just the error message
* Bug fix: missing callback argument
* Refactored ftp.js
Merge branch 'master' into feature/groups
* Allow for configurable logging option (basic callback function)
* TODO: create level logging
* Bugfix: Ftp methods were note prototype methods
* Uncaught exception now prints stacktrace instead of just the error message
* Bugfix: ftp source was not calling back on error
* Refactored ftp source
* ftp source will not consider 6xx as errors (which is more compliant with return code specifications)
Merge branch 'master' into feature/better-logging

Conflicts:
	server.js
Merge pull request #43 from chamerling/master

Local Heartbeat
Merge pull request #45 from stelcheck/feature/better-logging

Feature/better logging
Merge pull request #44 from stelcheck/feature/groups

Feature/groups
Update in the news section
Merge branch 'master' into feature/async

Conflicts:
	api.js