Add kingpin.

Gopkg.lock

vendor/github.com/alecthomas/template/LICENSE

vendor/github.com/alecthomas/template/README.md

vendor/github.com/alecthomas/template/doc.go

vendor/github.com/alecthomas/template/exec.go

vendor/github.com/alecthomas/template/funcs.go

vendor/github.com/alecthomas/template/helper.go

vendor/github.com/alecthomas/template/parse/lex.go

vendor/github.com/alecthomas/template/parse/node.go

vendor/github.com/alecthomas/template/parse/parse.go

vendor/github.com/alecthomas/template/template.go

vendor/github.com/alecthomas/units/COPYING

vendor/github.com/alecthomas/units/README.md

vendor/github.com/alecthomas/units/bytes.go

vendor/github.com/alecthomas/units/doc.go

vendor/github.com/alecthomas/units/si.go

vendor/github.com/alecthomas/units/util.go

vendor/gopkg.in/alecthomas/kingpin.v2/.travis.yml

vendor/gopkg.in/alecthomas/kingpin.v2/COPYING

vendor/gopkg.in/alecthomas/kingpin.v2/README.md