Carrierwave settings to conect with AWS S3 API

carrierwave.rb

# config/initializers/carrierwave.rb
CarrierWave.configure do |config|
  config.fog_credentials = {   
    :provider               => 'AWS',
    :aws_access_key_id      => ENV["AWS_ACCESS_KEY"],
    :aws_secret_access_key  => ENV["AWS_SECRET_KEY"],
    :region  => ENV["S3_REGION"]    
  }
  config.fog_directory  = ENV["AWS_BUCKET"]
end