Installation can be quick and easy through Heroku (one-click deployment, see video). A multi-architecture Docker image is also provided for the Docker people.
If you are using Heroku you already have a running bot. However it only supports a single Twitter feed.The configuration page gives you an insight how to configure your bot.
The configuration is written very extensively explaining what each variable does. There are 2 ways to configure the bot. Either through config.yml or through the use of environment variables.
See it in action
Visit my server to see live twitter feeds. There I am mirroring the tweets of