Update index.htm

Author: jfullstackdev

index.htm

@@ -74,6 +74,7 @@ <h1>xdvrx1</h1>
       <div>  
       <h2>Directory</h2> 
       <p>
+        <img src="https://github.com/xdvrx1/xdvrx1.github.io/blob/master/assets/preview1.jpg?raw=true" alt="banner" width="640" height="320">
         <a href="https://xdvrx1.github.io/C-Language-Tutorial/" target="_blank" style="color:blue">C Language </a>|  
         <a href="https://xdvrx1.github.io/PureBasic/" target="_blank" style="color:blue">PureBasic </a>|
         <a href="https://xdvrx1.github.io/ROBOTC/" target="_blank" style="color:blue">ROBOTC </a>|