title: Watch template files and copy them to dist/ folder
body: <p>I'm using typescript on my project and I can successfully watch + compile .ts files and output them to <code>dist</code> folder.</p>
  
  <p>here is the <code>scripts</code> part of my <code>package.json</code></p>
  
  <pre><code>"start": "npm run build &amp;&amp; npm run watch",
      "build": "npm run build-ts &amp;&amp; npm run tslint",
      "test": "cross-env NODE_ENV=test jest --watch",
      "watch": "concurrently -k -p \"[{name}]\" -n \"Typescript,Node\" -c \"cyan.bold,green.bold\" \"npm run watch-ts\" \"npm run serve\"",
      "serve": "nodemon dist/server.js",
      "build-ts": "tsc",
      "watch-ts": "tsc -w",
      "tslint": "tslint -c tslint.json -p tsconfig.json"
  </code></pre>
  
  <p>The problem is I want to use js templating engine <code>(nunjucks)</code> and I need to watch the view files inside the <code>views</code> folder and move them to the <code>dist</code> folder.</p>
  
  <ul>
  <li>Is there a way by just using <code>npm scripts</code> or <code>nodejs</code>?</li>
  <li>Or do I need to use other tools like <code>gulp</code> or <code>webpack</code>?</li>
  </ul>