RailsAssets?

bowerで管理しているパッケージをbundlerで利用できる

https://rails-assets.org/components

gem命名ルールは

gem 'rails-assets-BOWER_PACKAGE_NAME'

setting

Gemfile

source 'https://rails-assets.org'

gem 'rails-assets-bootstrap'
gem 'rails-assets-angular'
gem 'rails-assets-leaflet'

application.js

//= require bootstrap
//= require angular
//= require leaflet

application.css

*= require bootstrap
*= require leaflet