old_contents: var nconf = require('nconf');
  
  nconf
    .file({ file: './config/config.json' })
    .env();
  
  nconf.defaults({
    'RIPPLE_REST_API': 'http://localhost:5990',
    'DATABASE_URL': 'postgres://postgres:password@localhost:5432/ripple_gateway',
    'RIPPLE_DATAMODEL_ADAPTER': 'ripple-gateway-data-sequelize-adapter',
    'RIPPLE_EXPRESS_GATEWAY': 'ripple-gateway-express',
    'SSL': false,
    'PORT': 5000,
    'HOST': 'localhost'
  });
  
  module.exports = nconf;
  
new_contents: var nconf = require('nconf');
  
  nconf
    .file({ file: './config/config.json' })
    .env();
  
  nconf.defaults({
    'RIPPLE_REST_API': 'http://localhost:5990',
    'DATABASE_URL': 'postgres://postgres:password@localhost:5432/ripple_gateway',
    'RIPPLE_DATAMODEL_ADAPTER': 'ripple-gateway-data-sequelize-adapter',
    'RIPPLE_EXPRESS_GATEWAY': 'ripple-gateway-express',
    'SSL': false,
    'PORT': 5000,
    'HOST': 'localhost',
    'domain': 'example.com'
  });
  
  module.exports = nconf;
  
subject: Set domain to example.com by default.