Gemfile

# If you do not have OpenSSL installed, change
# the following line to use 'http://'
source 'https://rubygems.org'

# For faster file watcher updates on Windows:
gem 'wdm', '~> 0.1.0', platforms: [:mswin, :mingw]

# Windows does not come with time zone data
gem 'tzinfo-data', platforms: [:mswin, :mingw, :jruby]

# Middleman Gems
###############################
gem 'middleman', '~> 4.2', '>= 4.2.1'
gem 'middleman-livereload', '~> 3.4', '>= 3.4.6'
gem 'middleman-sprockets', '~> 4.1'
gem 'sprockets-es6', '~> 0.6.0'
#gem 'middleman-compass', '~> 4.0', '>= 4.0.1' (issue:https://github.com/coskuntekin/middleman_starter_kit/issues/1)

# Middleman Extensions
###############################
# (Middleman Deploy (https://github.com/middleman-contrib/middleman-deploy/pull/87))
gem 'middleman-deploy', '~>  2.0.0.pre.alpha'

# (Middleman Autoprefixer (https://github.com/middleman/middleman-autoprefixer))
gem 'middleman-autoprefixer', '~> 2.8'

# Frameworks/Library
###############################
# Bootstrap
gem 'bootstrap', git: 'https://github.com/twbs/bootstrap-rubygem'
# Popper
gem 'popper_js', '~> 1.9.9'