add promo gifs

Author: igork-ramotion

Promo/Blob-Menu-dark.gif

@@ -1,11 +1,11 @@
-<a href="https://www.ramotion.com/agency/app-development?utm_source=gthb&utm_medium=repo&utm_campaign=blob-menu"><img src="https://github.com/Ramotion/blob-menu/blob/master/header.png"></a>
-​
+<a href="https://www.ramotion.com/agency/app-development?utm_source=gthb&utm_medium=repo&utm_campaign=blob-menu"><img src="https://github.com/Ramotion/blob-menu/blob/master/Promo/Header.png"></a>
 ​
+<a href="https://github.com/Ramotion/animated-tab-bar">
+<img align="center" src="https://github.com/Ramotion/blob-menu/blob/master/Promo/Blob-Menu-dark.gif" /></a>
+
 <p><h1 align="left">BLOB MENU</h1></p>
-​
-<h4>Description</h4>
-​
-​
+
+<h4>Swift UI menu library.</h4>
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 ​
 ​