def process
      # if not exist the .liquigen file create it
      File.write(CONFIG_FILE, prepare_default_content.join("\n")) unless File.exist?(CONFIG_FILE)

      # then open the vim editor
      system('vi ' + CONFIG_FILE)
    end
def process
      # if not exist the .liquigen file create it
      File.write(CONFIG_FILE, prepare_default_content.join("\n")) unless File.exist?(CONFIG_FILE)

      # then open the vim editor
      system('vi ' + CONFIG_FILE)
    end
write config file