This command-line tool lets clients upload images to Gold.
If any interfaces in ./go/ change, it may be necessary to re-generate the mocks used for testing.
A typical user will download goldctl like any other Go executable
go install go.skia.org/infra/gold-client/cmd/goldctl
Googlers, if you are using goldctl from Swarming, you'll probably want to pull it in via CIPD
goldctl is set up to automatically be built and rolled out via CIPD
For more details, see: https://docs.google.com/document/d/1caPiBgWGjIyOhyMIYYYrFdekzwQ-_nsshp0GWzcSHzA/edit