Add Issue url to the bots list

Author: Eleirbag89

README.md

@@ -186,7 +186,7 @@ Check [ForceReply](https://core.telegram.org/bots/api#forcereply) for more info.
 
 List of Bots using the library
 ------------
-Let me know (see the Contact me section) if you have made a bot using this API, I will add it to this section.    
+Let me know using this [Issue](https://github.com/Eleirbag89/TelegramBotPHP/issues/80) if you have made a bot using this API, I will add it to this section.    
 * [Notifyadbot](https://telegram.me/notifyadbot) - Lang : Persian/Farsi
 * [Partners_shakibonline_bot](https://telegram.me/Partners_shakibonline_bot) - Lang : Persian/Farsi