Description:
  Generates a data update script.

Examples:
  `rails generate data_update ExampleScript`

    # lib/data_update_scripts/example_script.rb
    module DataUpdateScripts
      class ExampleScript
        def run
          # Place your data update logic here
          # Make sure your code is idempotent and can be run safely
          # multiple times at any time
        end
      end
    end