code: func load_config() {
  	file, err := ioutil.ReadFile(*configFile)
  	if err != nil {
  		log.Fatalf("Error reading config file %s", err)
  	}
  
  	err = json.Unmarshal(file, &config)
  	if err != nil {
  		log.Fatalf("Error decoding config file %s", err)
  	}
  }
docs: // Load and parse config json file