retina_rails 2.0.4
Retina Rails makes your application use high-resolution images by default. It automatically optimizes uploaded images (CarrierWave or Paperclip) for retina displays by making them twice the size and reducing the quality.
          Gemfile:
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          安装:
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      Runtime 依赖 (1):
            rails
            >= 3.2.0
          
    Development 依赖 (8):
            bundler
            >= 1.0.0
          
          
            carrierwave
            >= 0
          
          
            coveralls
            >= 0
          
          
            paperclip
            >= 0
          
          
            rake
            >= 0
          
          
            rmagick
            >= 0
          
          
            rspec-rails
            ~> 3.4
          
          
            sqlite3
            >= 0