29. gem (一部) ruby '2.0.0' gem 'rails', ' > 4.0.0' gem 'ancestry', # tree model gem 'acts-as-taggable-on' # tagging gem 'slim', :require => 'slim-rails' gem 'draper' # decorator(view-model) gem 'serverengine' gem 'better_errors' # sophisticated error view gem 'byebug' # ruby 2.0 debugger
![Yohoushi](https://cdn-ak-scissors.b.st-hatena.com/image/square/e8351a30a328016233ca1afd4c5653411e703849/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fyohoushi-130725025839-phpapp01-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)