> go get github.com/martini-contrib/oauth2
# github.com/martini-contrib/oauth2
src/github.com/martini-contrib/oauth2/oauth2.go:51: undefined: oauth2.Options
> go run server.go
# github.com/martini-contrib/oauth2
src/github.com/martini-contrib/oauth2/oauth2.go:51: undefined: oauth2.Options
> go version
go version go1.3.3 linux/amd64