add an example of  addon
change internal code structure
remove unused requires
name action listener properly
Update README.md

Minor changes to reflect the Grunt refactoring.
Merge pull request #114 from dmoranj/patch-1

Update README.md
Merge pull request #118 from telefonicaid/addon_example

Addon example
Groups of queues by dmoranj/PopBox@82e0643c96
Add LF to the last line
Merge pull request #121 from telefonicaid/groups

Groups
 Add secure boxes
Protect 'susbcribe' mehtod
Merge pull request #123 from telefonicaid/secure

Secure
Merge unstable
Adapt group service to Express 3.0