rails install 時の nokogiri エラー - QiitaFetching: activesupport-4.2.2.gem (100%) Successfully installed activesupport-4.2.2 Fetching: rails-deprecated_sanitizer-1.0.3.gem (100%) Successfully installed rails-deprecated_sanitizer-1.0.3 Fetching: mini_portile-0.6.2.gem (100%) Successfully installed mini_portile-0.6.2 Fetching: nokogiri-1.6.6.2.gem (100%) Building native extensions. This could take a while... ERROR: Error installing rails:
