'woj' is a tool to make it easier the typical workflow of a software developer (ex: issue creation in Jira + git checkout/rebase/push + Bitbucket code review + ...)
See the "HelpFaq" section on file help.go for very detailed explanation of what 'woj' exactly is and how you can use it.
Tip: the rest of sections on that file are also a good source of information.
Build it as any other "go" program:
$ go build .
I particulary like to use this other command to obtain a static binary that runs on 99% of the Linux systems out there:
$ CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build .
If you want to cross-compile a Windows binary from Linux, use this other command instead:
$ CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build .