Index: Add paragraph about website source code

public/index.html

@@ -49,6 +49,12 @@
                 It implements parts of the <a href="https://html.spec.whatwg.org/multipage/parsing.html#tokenization">HTML parser spec</a>
                 to tokenize and highlight it's own source code.
             </p>
+            <p>
+                You can find the full source code of the site <a href="https://gitlab.upi.li/networkException/nwex.de">here</a>.
+                It's licenced under BSD-2-Clause, so feel free to use the code as a reference to implement your own parser!
+                If you have something interesting to share or just want to tell how the code might have helped you, make
+                sure to send me a message :^)
+            </p>
         </section>
 
         <!-- Inner workings of the page -->