title: node-0.12.7_1 already installed, it's just not linked
body: <p>So, lately i checked my npm version and got this error message:</p>
  
  <pre><code>Yogies-MacBook-Pro:bin yogieputra$ node --version
  v0.12.7
  Yogies-MacBook-Pro:bin yogieputra$ npm --version
  -bash: /usr/local/bin/npm: No such file or directory
  Yogies-MacBook-Pro:bin yogieputra$ brew install npm
  Warning: node-0.12.7_1 already installed, it's just not linked
  </code></pre>
  
  <p>Anyone know how to fix this issue?</p>