Package winsvc is simply a fork from http://code.google.com/p/winsvc. As can be guessed from the name, it only works on Windows.
go doc style documentation for the project can be viewed online without
installing this package by using the GoDoc site here:
You can also view the documentation locally once the package is installed with
godoc tool by running
godoc -http=":6060" and pointing your browser to
$ go get github.com/btcsuite/winsvc
See the LICENSE file.