Updated BUILDING.MD with instructions to get "gotestsum"
@@ -21,6 +21,7 @@ You will also need the following tools:
* GNU Make
* [`dep`](https://github.com/golang/dep)
+* [`gotestsum`](https://github.com/gotestyourself/gotestsum)
## Build using Go
@@ -34,6 +35,12 @@ At this point you can use `go` to checkout `docker-app` in your `GOPATH`:
go get github.com/docker/app
```
+Then use `go` to checkout `gotestsum`:
+
+```console
+go get gotest.tools/gotestsum
+```
+
You are ready to build `docker-app` yourself!
`docker-app` uses `make` to create a repeatable build flow. It means that you
