Atom IDE の使い方 参考： Atom IDE [Official] atom-ide-ui | Atom Packages facebook-atom/atom-ide-ui: A collection of user interfaces for Atom IDE – GitHub atom/atom-languageclient: Language Server Protocol support for Atom (the basis of Atom-IDE) – GitHub Ruby 参考： ide-ruby | Atom Packages YAML 参考： ide-yaml | Atom Packages