symfony bundle import and use

My question is how exactly use this example  https://github.com/alexdebril/rss-atom-bundle in my new application created by symfony new my_project_name --full how to use bundle and configure routing.yml?? There is a description but I’m newby and is difficult to understand for me. I’m trying to create same app in 3 languages. It is the reason why I need this example in php symfony 3.4.