def ensure_configuration_file
      config = @options[:config_paths]
      return true if File.exists?(config) && File.readable?(config)
      puts "Could not find the asset configuration file \"#{config}\""
      exit(1)
    end
def ensure_configuration_file
      config = @options[:config_paths]
      return true if File.exists?(config) && File.readable?(config)
      puts "Could not find the asset configuration file \"#{config}\""
      exit(1)
    end
Make sure that we have a readable configuration file. The @jammit@
 command can't run without one.