title: npm command not found after updating to Mac OSX 10.9.4
body: <p>I can't do npm command on terminal after updating my OS to Mavericks.</p>
  
  <p>when I try this: <code>node /usr/local/lib/node_modules/npm/bin/npm-cli.js -v</code> it is working and showing the version 1.4.3</p>
  
  <p>I don't know what's happening here, can anyone help me?
  Thanks</p>