You must have an account for Discord, GitHub , Heroku, and Repl.it (you probably have an account already).

• Create an application in the developer portal here
• Open up your new application and click 'Add Bot' under the Bot settings to create your bot.
• After creating the bot, click the 'Copy' button under the title Token. Take note of your token as you will need it later.

• Create a new repository from this one here. Follow all the prompts and hit "Create repository from template" This contains all the code you need to host your bot on Heroku.
• Open a new tab and put in this link: https://repl.it/github/YOUR_GITHUB_USERNAME_HERE/YOUR_REPO_NAME_HERE

• Create an application for Heroku here.
• Under 'Deploy', do the following:
  • Deployment Method => Connect your GitHub
  • App connected to GitHub => Search for the forked repository
  • Automatic Deploy => Enable Automatic Deploy (to redeploy after every commit)
• Under 'Settings', click on 'Reveal Config Vars' and enter the following:
  • KEY => DISCORD_TOKEN
  • VALUE => (Enter the bot token that you copied from the developer portal)
  • Click the 'Add' button after entering all of this information.
• Under 'Resources', do the following:
  • Click on the 'Pencil' icon.
  • Switch the worker from off to on.
  • Click 'Confirm' to finalize the decision.
  • NOTE: You are given 550 free Dyno hours, which will not last the entire month. However, if you provide a credit card to verify your identity, you are given an additional 450 hours, which will allow your bot to run indefinitely. You will not be charged for this.

• Now you can tweak the main.py file as you please! just don't mess with the first 5 or last 2 lines (you can change the prefix in line 4 though.)
• You can change the @app.route stiff in server.py
• You can also change base.html and index.html without changing the stuff inside {% %} or {}, and you are able to change the css and js files freely
• Don't change the rest of the files or the name of any file or folder unless you know what you're doing
• Don't under any circumstances rename the "static" and "templates" folders

I forked from his though IDK why it doesnt say