truffle.js

// Allows us to use our .babelrc profile in tests.
require('babel-register');

module.exports = {
  migrations_directory: './migrations',
  networks: {
    development: {
      host: 'localhost',
      port: 8545,
      network_id: '*', // Match any network id
    },
    ropsten: {
      host: 'localhost',
      port: 8545,
      network_id: 3,
    },
    kovan: {
      host: 'localhost',
      port: 8545,
      network_id: 42,
      gas: 4000000,
    },
  },
};