Merge pull request #7 from ctrabold/master

Fix 'elacsticsearch' to 'elasticsearch' in roles/monigusto_server.json
avoid chef v11 installation, resort to last chef v10
expose rabbitmq, and sensu ports in Vagrant
added sensu documentation
updated dependencies in Cheffile for Sensu
added sensu config to monigusto_server role
removed trailing comma in role json file
adde sensu & librato to the description
merge fixes
re-fixed elacticsearch -> elasticsearch
added librato backend description
update chef first always
Add missing package for nodejs
Merge branch 'master' of git://github.com/monigusto/vagrant-monigusto

* 'master' of git://github.com/monigusto/vagrant-monigusto:
  update chef first always
  added librato backend description
  re-fixed elacticsearch -> elasticsearch
  adde sensu & librato to the description
  removed trailing comma in role json file
  added sensu config to monigusto_server role
  updated dependencies in Cheffile for Sensu
  added sensu documentation
  expose rabbitmq, and sensu ports in Vagrant
  avoid chef v11 installation, resort to last chef v10