@yasuyk  It's linked from [Golang.org](http://golang.org/doc/cmd), though, so it seems to be “semi-official” at least.  

Let's just us both URLs :)  Tell me, when you're done with the test cases, then I'll update the Vagrant provisioning (see https://github.com/flycheck/flycheck/pull/329#issuecomment-34543586), add the detailed documentation URL, and merge the thing.