The comment will ensure that only imports with
this path will compile.This is needed to make sure
that the vanity url k8s.io is used as the import path
instead of github.com.
See https://golang.org/doc/go1.4#canonicalimports
for more details.
Adding blank line between comment tag and package name in doc.go. So
that the comment tags such as '+k8s:deepcopy-gen=package' do not show up
in GoDoc.
