def ensure_config
      return if @config_found
      found = CONFIG_FILES.all? {|f| File.exists? "#{@options[:config_path]}/#{f}" }
      found ? @config_dir = true : config_not_found
    end
def ensure_config
      return if @config_found
      found = CONFIG_FILES.all? {|f| File.exists? "#{@options[:config_path]}/#{f}" }
      found ? @config_dir = true : config_not_found
    end
Check for configuration files, either in the current directory, or in
 the CLOUD_CROWD_CONFIG environment variable. Exit if they're not found.