add one more project structure recommendation

_examples/project/cmd/help.go

@@ -0,0 +1,43 @@
+package cmd
+
+import (
+	"fmt"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// HelpTemplate is the structure which holds the necessary information for the help command.
+type HelpTemplate struct {
+	BuildTime            string
+	BuildRevision        string
+	ShowGoRuntimeVersion bool
+
+	Template fmt.Stringer
+}
+
+func (h HelpTemplate) String() string {
+	tmpl := `{{with (or .Long .Short)}}{{. | trimTrailingWhitespaces}}
+	{{end}}{{if or .Runnable .HasSubCommands}}{{.UsageString}}{{end}}`
+
+	if h.BuildRevision != "" {
+		buildTitle := ">>>> build" // if we ever want an emoji, there is one: \U0001f4bb
+		tab := strings.Repeat(" ", len(buildTitle))
+
+		n, _ := strconv.ParseInt(h.BuildTime, 10, 64)
+		buildTimeStr := time.Unix(n, 0).Format(time.UnixDate)
+
+		buildTmpl := fmt.Sprintf("\n%s\n", buildTitle) +
+			fmt.Sprintf("%s revision      %s\n", tab, h.BuildRevision) +
+			fmt.Sprintf("%s datetime      %s\n", tab, buildTimeStr)
+
+		if h.ShowGoRuntimeVersion {
+			buildTmpl += fmt.Sprintf("%s runtime       %s\n", tab, runtime.Version())
+		}
+
+		tmpl += buildTmpl
+	}
+
+	return tmpl
+}