bundle install時の "You may need to add a javascript runtime"
bundle install時に出るエラー、というか忠告。
Post-install message from twitter-bootswatch-rails:
Important: You may need to add a javascript runtime to your Gemfile in order for bootstrap's LESS files to compile to CSS.
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ExecJS supports these runtimes:
therubyracer - Google V8 embedded within Ruby
therubyrhino - Mozilla Rhino embedded within JRuby
Node.js
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解決したコマンド。
gem install execjs
Gemfileにexecjs書くのではなく、gem installで入れよということ。