Update page 'Customization'

Customization.md

@@ -8,6 +8,16 @@ git clone https://code.0x2620.org/0x2620/pandora_overlay.git <sitename>
 ```
 
 now configure config.jsonc and add custom JavaScript files and images.
+i.e.
+
+```
+cd /srv/pandora/<sitename>
+cp /srv/pandora/pandora/config.padma.jsonc config.jsonc
+mkdir -p static/js
+cp /srv/pandora/static/js/infoView.padma.js static/js/infoView.<sitename>.js
+vim config.jsonc
+```
+
 to active / update run:
 
 ```