title: Npm rebuild node-sass fails
body: <p>I have an old project that has a grunt as build tool. I have installed the project dependencies and grunt cli. This is the package.json file:</p>
  
  <pre><code>{
    "name": "",
    "version": "0.0.1",
    "devDependencies": {
      "grunt": "~0.4.1",
      "grunt-contrib-watch": "~0.5.3",
      "grunt-sass": "^1.0.0",
      "node-sass": "^3.3.3"
    }
  }
  </code></pre>
  
  <p>On trying to run grunt I got an error that I need to run <code>npm rebuild node-sass</code>, but I got a new error then:</p>
  
  <blockquote>
    <p>npm ERR! Failed at the node-sass@3.4.2 postinstall script 'node
    scripts/build.js'. npm ERR! Make sure you have the latest version of
    node.js and npm installed. npm ERR! If you do, this is most likely a
    problem with the node-sass package, npm ERR! not with npm itself.</p>
  </blockquote>
  
  <p>I have even tried with running the command with the <code>--force flag</code>.
  But that didn't work either, how can I fix this?</p>