Through the Portfolio section within the app, you're encouraged to add a short description about yourself. Whilst this doesn't support much formatting, it will allow for you to add links.

To add a link in your description, simply use the standard HTML markup as shown in this example:

Find out <a href="http://buzzgraphics.co.uk">more about me</a> on my website!</code>

You can also add links to your notes. Find out more.