usage_path

# File railties/lib/rails/generators/base.rb, line 364
        def self.usage_path
          paths = [
            source_root && File.expand_path("../USAGE", source_root),
            default_generator_root && File.join(default_generator_root, "USAGE")
          ]
          paths.compact.detect { |path| File.exist? path }
        end