Update index.html

index.html

@@ -148,6 +148,8 @@
            <li>Every picture folder may contain a "thumbs" subfolder - that you should create - to not lack in performance: file names in thumbs must be same of file names in parent folders.</li>
 
 	   </ol>
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+	   <img src="Public/static/res/screenshot1.jpg" style="width:300px">
 	   
 	   <br>