keyboards: added constructors

bot.go

@@ -1365,3 +1365,7 @@ func (b *Bot) SetCommands(cmds []Command) error {
 	_, err := b.Raw("setMyCommands", params)
 	return err
 }
+
+func(b *Bot) NewMarkup() *ReplyMarkup{
+	return &ReplyMarkup{}
+}

options.go

@@ -202,6 +202,38 @@ func (r *ReplyMarkup) Reply(rows ...row) {
 
 	r.ReplyKeyboard = replyKeys
 }
+func(r *ReplyMarkup) Text(unique,text  string) Btn {
+	return Btn{Unique: unique, Text: text}
+}
+
+func(r *ReplyMarkup) URL(unique,url string) Btn {
+	return Btn{Unique: unique, URL: url}
+}
+
+
+func(r *ReplyMarkup) Query(unique string, query string) Btn {
+	return Btn{Unique: unique, InlineQuery: query}
+}
+
+func(r *ReplyMarkup) QueryChat(unique string, query string) Btn {
+	return Btn{Unique: unique, InlineQueryChat: query}
+}
+
+func(r *ReplyMarkup) Login(unique,text string,login *Login) Btn {
+	return Btn{Unique: unique, Login: login, Text: text}
+}
+
+func(r *ReplyMarkup) Contact(text string) Btn {
+	return Btn{Contact:true, Text: text}
+}
+
+func(r *ReplyMarkup) Location(text string) Btn {
+	return Btn{Location:true, Text: text}
+}
+
+func(r *ReplyMarkup) Poll(poll PollType) Btn {
+	return Btn{Poll: poll}
+}
 
 // Btn is a constructor button, which will later become either a reply, or an inline button.
 type Btn struct {