Merge pull request #487 from sidnei/master

Fix typo in error message.
added Sidnei da Silva in AUTHORS and CONTRIBUTORS.
Merge pull request #491 from sidnei/master

Rename ProvisionUnits to ProvisionedUnits since it is a method that returns provisioned units, not a method to provision them.
provision/juju: added a method to return the router.
router/elb: added support for vpc.
provision/juju: using router for add/remove elb.
provision/juju: using router for add route.
provision/juju: using router to get Addr.
provision/juju: using  router in remove unit.
provision/juju: using router in heal.
juju: removed LoadBalancer.
juju: remove elb manager from provisioner_test.
juju: removed elb manager from queue_test.
juju: remove loadBalancer.
docker-setup: git hooks require config in environment
docker-setup: remove call to renamed function
Merge pull request #492 from dgryski/fix-git-hooks-environment

docker-setup: configuring environments to git hooks
router/elb: refactored the way to get the elb endpoint.
docker-setup: tsr should run as 'ubuntu', not as whomever is running the bootstrap script.
docker: the deploy command needs the git-ref-id too