message: feat: add error alarm when node.js version lt 8
diff: #!/usr/bin/env node
  "use strict";
  +if (Number(process.versions.node[0] < 8)) {
  + const colors = require('colors');
  + console.error(colors.red('Pandora.js required Node.js >= 8.0.0, current version is ' + process.versions.node));
  + process.exit(1);
  +}
  +
  // FIX ISSUE LIKE: https://github.com/npm/npm/issues/4603
  const {spawn} = require('child_process');
  if (process.env.npm_config_argv && !process.env.npm_run_pandora_l2) {
  spawn(process.argv[0], process.argv.slice(1), {
  stdio: 'inherit',
  - env: {
  - npm_run_pandora_l2: 'true',
  - ...process.env
  - }
  + env: Object.assert({
  + npm_run_pandora_l2: 'true'
  + }, process.env)
  });
  return;
  }
  