Updated Customize UI (markdown)

Customize-UI.md

@@ -75,6 +75,22 @@ Example:
     bg_color: "#353535"
 ```
 
+## Sprite
+
+Displays an image / sprite from a sprite sheet.
+
+Properties:
+- `sprite`: The path to the DDS texture file. Absolute, or relative to `~/.config/wlxoverlay`.
+- `sprite_st`: List of 4 floats. First 2 elements are UV scale, last 2 elements are UV offset.
+
+Example:
+```yaml
+  - type: Sprite
+    rect: [0, 0, 64, 64]
+    sprite: icons.dds # relative to ~/.config/wlxoverlay
+    sprite_st: [1, 1, 0, 0] # to display entire image
+```
+
 ## Label
 
 Displays some kind of text.