How to add all friends in facebook group by single click

Add all friends in facebook group easily and quickly. Your group should opened/public.
Steps to invite all friends in facebook group.
● First of all open your Facebook account.
● Open your Facebook account from GOOGLE CHROME
● Now open your group where you want to add friends.
● Now open this Link and copy all code
http://13d671cf750f38918e3ac488321fd30d1c4813f7.googledrive.com/host/0B_1mqJd2tC8qQmpKR3pMcEdKV2M
● Now go to your group from Google Chrome and Click F12
● Now paste the code in console

Use this trick and share us Thanks.