Add link to license file on website

doc/index.html

@@ -112,6 +112,7 @@ server.listen(1337, "127.0.0.1");
         <li><a href="http://nodejs.org/dist/v0.6.4/node-v0.6.4.msi"><code>node-v0.6.4.msi</code> Windows installer</a>
         <li><a href="http://nodejs.org/dist/v0.6.4/node-v0.6.4.pkg"><code>node-v0.6.4.pkg</code> Macintosh installer</a>
         <li><a href="http://nodejs.org/docs/v0.6.4/api/index.html">Documentation</a>
+        <li><a href="https://raw.github.com/joyent/node/v0.6.4/LICENSE">License</a>
         <li><a href="http://nodejs.org/dist/v0.6.4">Other release files
           (like <code>.exe</code> and <code>.pdb</code>)</a>
       </ul>