Add bot to your server using this link.

Configuration

Create .env file with the following content

IS_DEV=Y
DISCORD_TOKEN=PUT.YOUR.DISCORD.TOKEN.HERE
TWITTER_CONSUMER_KEY=PUT.YOUR.TWITTER.CONSUMER.KEY.HERE
TWITTER_CONSUMER_SECRET=PUT.YOUR.TWITTER.CONSUMER.SECRET.HERE
TWITTER_ACCESS_TOKEN_KEY=YOUR.TWITTER.ACCESS.TOKEN.KEY.HERE
TWITTER_ACCESS_TOKEN_SECRET=YOUR.TWITTER.ACCESS.TOKEN.SECRET.HERE

Copy config.example.js to config.js and add the IDs of channels to which you want to send updates.