cannot find package

Hello World!

I'm trying to follow [Building](https://github.com/cloudflare/cfssl#building) (cfssl) and [Installation](https://github.com/cloudflare/go-metrics#installation) (go-metrics), yet running into following issue:

```
# go get github.com/rcrowley/go-metrics
# go get github.com/stathat/go
# gmake
go build -o bin/multirootca ./cmd/multirootca
cmd/multirootca/api.go:16:2: cannot find package "github.com/cloudflare/go-metrics" in any of:
/usr/local/go/src/github.com/cloudflare/go-metrics (from $GOROOT)
/root/go/src/github.com/cloudflare/go-metrics (from $GOPATH)
gmake: *** [bin/multirootca] Error 1
#
```

Please advise.