Updated Settings (markdown)

Settings.md

@@ -33,6 +33,26 @@ and then reference that image:
 background: /images/background.png
 ```
 
+## Favicon
+
+If you'd like to use a custom favicon instead of the included one, you may provide a full URL to an image of your choice.
+
+```yaml
+favicon: https://www.google.com/favicon.ico
+```
+
+Or you may pass the path to a local image relative to the `/app/public` directory.  See [Background Image](#background-image) for more detailed information on how to provide your own files.
+
+## Base URL
+
+In some proxy configurations, it may be necessary to set the documents base URL.  You can do this by providing a `base` value, like so:
+
+```yaml
+base: http://host.local/homepage
+```
+
+**_The URL must be a full, absolute URL, or it will be ignored_**
+
 ## Providers
 
 The `providers` section allows you to define shared API provider options and secrets.  Currently this allows you to define your weather API keys in secret.