Update README.md

Author: hai-vr

README.md

@@ -1,11 +1,13 @@
-# Lightbox Viewer
+# Lightbox Viewer
 
 ### [> Download latest version...](https://github.com/hai-vr/lightbox-viewer/releases)
 - [> Download on GitHub...](https://github.com/hai-vr/lightbox-viewer/releases)
 - [> Download on Booth.pm...](https://hai-vr.booth.pm/items/3870813)
 
 *Lightbox Viewer* lets you simultaneously visualize changes in shader material settings under different lighting conditions.
 
+https://user-images.githubusercontent.com/60819407/168694947-fad20fba-8a24-4ef3-a0c0-c199a839dfc0.mp4
+
 ## Having issues? Join my Discord Server
 
 I will try to provide help on the #lightbox-viewer channel when I can.
@@ -16,4 +18,4 @@ I will try to provide help on the #lightbox-viewer channel when I can.
 
 Full documentation complete with illustrative videos [is available here](https://hai-vr.github.io/lightbox-viewer/).
 
-*[Open Documentation / Tutorial at https://hai-vr.github.io/lightbox-viewer/ ...](https://hai-vr.github.io/lightbox-viewer/)*
+*[Open Documentation / Tutorial at https://hai-vr.github.io/lightbox-viewer/ ...](https://hai-vr.github.io/lightbox-viewer/)*