Update readme.md

readme.md

@@ -6,8 +6,11 @@ This is a basic and responsive HTML link tree website.
 This is a work in progress.
 
 ### To-dos
-[ ] Accessibility
+[ ] Accessibility <br>
+[ ] SEO<br>
+[ ] Improved design
 
-[ ] SEO
+#### Credits
-
+Background image: https://pixabay.com/photos/white-wall-texture-home-empty-1209550/<br>
-[ ] Improved design
+Hetzner image: https://www.hetzner.com/pressroom/
+Font: https://fonts.google.com/specimen/Questrial