add puppet forge badge
Add support for stackdriver backend
Merge pull request #3 from dgarbus/master

Add support for graphite options
Add support for stackdriver backend

* add puppetlabs/stdlib dependency
* update backend verification
* add stackdriver-statsd-backend params
* update `tests/vagrant.pp` to reflect stackdriver usage
Merge branch 'convectionlabs-master'
add stdlib to fixtures
update documentation, TravisCI config
Merge remote-tracking branch 'upstream/master'