title: How to upgrade Typescript to the latest version?
body: <p>I have a MacBook Pro with OS X 10.8.2
  Some time ago I installed Typescript and today I'd like to upgrade that installation to the latest version available (so far, v0.8.3). 
  I wrote this command from the terminal:</p>
  
  <pre><code>sudo npm install -g typescript
  </code></pre>
  
  <p>But this is what I got on the display:</p>
  
  <pre><code>npm http GET https://registry.npmjs.org/typescript
  npm http 304 https://registry.npmjs.org/typescript
  /usr/local/bin/tsc -&gt; /usr/local/lib/node_modules/typescript/bin/tsc
  typescript@0.8.0 /usr/local/lib/node_modules/typescript
  </code></pre>
  
  <p>Does this means that I still have version 0.8.0 installed on my computer?
  I tried to see if the tsc command has a <code>-v</code> or a <code>-version</code> parameter but I haven't found it, so I still uncertain if I have upgraded Typescript to the latest release or if I'm still stuck with an older version.</p>