Support for global flags in help text

help.go

@@ -7,8 +7,9 @@ import "text/template"
 type HelpData struct {
 	Name     string
 	Usage    string
-	Commands []Command
 	Version  string
+	Commands []Command
+	Flags    []Flag
 }
 
 var HelpCommand = Command{
@@ -34,12 +35,16 @@ VERSION:
 COMMANDS:
     {{range .Commands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
     {{end}}
+GLOBAL OPTIONS
+    {{range .Flags}}{{.}}
+    {{end}}
 `
 	data := HelpData{
 		Name,
 		Usage,
-		append(Commands, HelpCommand),
 		Version,
+		append(Commands, HelpCommand),
+    Flags,
 	}
 
 	w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)