Merge pull request #105 from robszumski/master

fix(ec2): fix broken AMI link
feat(gce): add note about GCE account
Merge pull request #107 from robszumski/google-note

feat(gce): add note about GCE account
Merge pull request #106 from robszumski/master

feat(getting-started-etcd): add etcdctl examples and update curl examples
feat(getting-started-systemd): add unit name and start instructions