favicons, improve README.

static/README.md

@@ -1,8 +1,13 @@
 # Favicons
 
-Two websites are being used to generate these:
+Two websites are being used to generate them based on the file at
+`assets/img/veganarchism.png`.
 
-- favicon.io
-- realfavicongenerator.net
+- [favicon.io](https://favicon.io)
+- [realfavicongenerator.net](https://realfavicongenerator.net)
 
-One makes smaller files and the other makes larger.
+One makes smaller files and the other makes larger plus svg.
+
+Then the `layouts/partials/extend_head.html` file helps add any favicons that
+PaperMod does not account for. Previous themes used `meta.html` and
+`favicons.html` with a custom `layouts/_default/baseof.html`.