function initCmd (cwd) {
	const initFile = path.resolve(config.home, '.ied-init')

	init(cwd, initFile, (err) => {
		if (err) {
			if (err.message === 'canceled') {
				console.log('init canceled!')
				return
			}
			throw err
		}
	})
}
initialize a new `package.json` file.
@param  {String} cwd - current working directory.
@see https://www.npmjs.com/package/init-package-json