title: Nodejs - Cant import module unless use the full path
body: <p>I installed it and am trying to use the w3 module (on windows).</p>
  <p>I have altered my global repo location to: <code>C:\Users\&lt;user&gt;\.node_modules_global</code>
  and installed the web3 module with the command bellow, which created a new folder on the node_modules_global folder:</p>
  <pre><code>npm install ethereum/web3.js --global
  </code></pre>
  <p>When I try to run:</p>
  <p><code>Web3 = require('web3')</code> it, I get an</p>
  <p><code>Error: Cannot find module 'web3'</code></p>
  <p>however, if I use the fullpath:</p>
  <pre><code>Web3 = require('C:\\Users\\&lt;user&gt;\\.node_modules_global\\node_modules\\web3')
  </code></pre>
  <p>It works.</p>
  <p>Any idea what could be causing this issue? (I have added <code>C:\\Users\\&lt;user&gt;\\.node_modules_global</code> to the SYSTEM PATH).</p>