Fix main.go:77: undefined: importer.NewImporter

I noticed the build was failing due to changes in the `importer` package.

>...\github.com\Intermernet\implements\main.go:77: undefined: importer.NewImporter

This fixes the build but it may be worth updating `honnef.co/go/importer` from `github.com/dominikh/go-importer` to avoid the first code change.