Update App.svelte

Author: squirrelsquirrel78

src/App.svelte

@@ -215,7 +215,12 @@
     </div>
 
     <SectionHeader empty />
-    <p class="updated-text">Updated May 2020.</p>
+    <p class="updated-text">Updated May 2020. <span style="text-transform: none;">
+      You are welcome to use this code/design for your own website under the <a
+        rel="license"
+        href="http://creativecommons.org/licenses/by-sa/4.0/"
+      >Creative Commons Attribution-ShareAlike 4.0 International License</a>.</span>
+    </p>
   </footer>
 
 </main>