@@ -42,6 +42,9 @@ func Untar(archive io.Reader, path string) error {

 	return nil

 }

+// CmdStream executes a command, and returns its stdout as a stream.

+// If the command fails to run or doesn't complete successfully, an error

+// will be returned, including anything written on stderr.

 func CmdStream(cmd *exec.Cmd) (io.Reader, error) {

 	stdout, err := cmd.StdoutPipe()

 	if err != nil {