title: npm install is extremely slow
body: <p>I have the following package.json file: </p>
  
  <pre><code>{
    "name": "trainologic",
    "version": "1.0.0",
    "description": "",
    "main": "main.js",
    "dependencies": {
      "child_process": "^1.0.2",
      "http-server": "^0.9.0",
      "open": "0.0.5"
    },
    "devDependencies": {
  
    },
    "scripts": {
      "start": "node main.js"
    },
    "author": "",
    "license": "ISC"
  }
  </code></pre>
  
  <p>When I do "npm install" it takes very-very long time to download 3 dependencies. </p>
  
  <p>My OS is Ubuntu 16, and my node version is v4.2.6.</p>