app, help: add support for multiple authors

app.go

@@ -40,10 +40,8 @@ type App struct {
 	CommandNotFound func(context *Context, command string)
 	// Compilation date
 	Compiled time.Time
-	// Author
-	Author string
-	// Author e-mail
-	Email string
+	// Authors
+	Authors []Author
 	// Writer writer to write output to
 	Writer io.Writer
 }
@@ -67,8 +65,7 @@ func NewApp() *App {
 		BashComplete: DefaultAppComplete,
 		Action:       helpCommand.Action,
 		Compiled:     compileTime(),
-		Author:       "Author",
-		Email:        "unknown@email",
+		Authors:      []Author{{"Jim", "jim@corporate.com"}, {"Hank", "hank@indiepalace.com"}},
 		Writer:       os.Stdout,
 	}
 }
@@ -273,3 +270,19 @@ func (a *App) appendFlag(flag Flag) {
 		a.Flags = append(a.Flags, flag)
 	}
 }
+
+// Author represents someone who has contributed to a cli project.
+type Author struct {
+	Name  string // The Authors name
+	Email string // The Authors email
+}
+
+// String makes Author comply to the Stringer interface, to allow an easy print in the templating process
+func (a Author) String() string {
+	e := ""
+	if a.Email != "" {
+		e = " <" + a.Email + "> "
+	}
+
+	return fmt.Sprintf("%v %v", a.Name, e)
+}