补充一部分cmd信息,增加部分注释 (#25)

Co-authored-by: daofeng <jcb20150301@qq.com>

example/main.go

@@ -13,8 +13,8 @@ import (
 
 func main() {
 	log.SetLevel(log.DebugLevel)
-	c := client.NewClient(6)
-	c.SetCookie("this is a example cookie.")
+	c := client.NewClient(23943357)
+	c.SetCookie("")
 	//弹幕事件
 	c.OnDanmaku(func(danmaku *message.Danmaku) {
 		if danmaku.Type == message.EmoticonDanmaku {