Update README.md

Author: MarketingPip

README.md

@@ -30,7 +30,9 @@ A Github Action to optimize images in a repo
 <summary>How to use this action</summary>
 <br><br>     
 
+<b><i>Note:</b></i> By DEFAULT all supported image file types in the root of your repo excluding sub-folders will be optimized. (SVG images are NOT supported)
 
+<br>
 
 <details>
 <summary>