add example for piping browser cli output

lib/launcher/example_test.go

@@ -1,6 +1,7 @@
 package launcher_test
 
 import (
+	"os"
 	"os/exec"
 
 	"github.com/go-rod/rod"
@@ -16,6 +17,12 @@ func Example_use_system_browser() {
 	}
 }
 
+func Example_print_browser_CLI_output() {
+	// Pipe the browser stderr and stdout to os.Stdout .
+	u := launcher.New().Logger(os.Stdout).MustLaunch()
+	rod.New().ControlURL(u).MustConnect()
+}
+
 func Example_custom_launch() {
 	// get the browser executable path
 	path := launcher.NewBrowser().MustGet()