version: move version string into new package
gitignore: be more specific when ignoring /etcd
godep: add deps for etcdctl
etcdctl: import from external repo
etcdctl: remove build indicator from README.md
etcdctl: reflect build script location in README.md
etcdctl: update to meet go vet
Merge pull request #1364 from bcwaldon/import-etcdctl

Import etcdctl