github.com/ToQoz/godeps reveal go pkg dependencies.
$ cd a-go-pkg
$ godeps .
$ dot -Tpng godeps.dot -o godeps.png
You can embed to your project's README like this.
godoc like web version. And it provide badge like travis-ci.
If you simply want to know imported pkgs. You can do by excuting go list -f {{.Imports}} or go list -f {{.Deps}}
go list -f {{.Deps}} gets pkgs recursively.