docs: add note about GIF speed in README

1 files changed, 2 insertions, 0 deletions

diff --git a/README.md b/README.md
index 9ac7774..2047dde 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@ A lightweight, focused, vanilla JavaScript image lightbox library, only around *
 
 ![screenshot](https://github.com/BigCoke233/libra/blob/master/screenshot.gif)
 
+_*GIF might appear slower than actual._
+
 ## Usage
 
 Grab [libra.min.js](https://github.com/BigCoke233/libra/blob/master/dist/libra.min.js) and put it in your project.