source 'https://rubygems.org' group :development, :test do gem 'jekyll', '~> 3.1.2' gem 'jekyll-redirect-from', '~> 0.9.1' gem 'jekyll-sitemap', '~> 0.10.0' gem 'sass', '~> 3.4.21' gem 'scss_lint', '~> 0.47.1' end