Update README.md

Author: JosefJezek

README.md

@@ -16,6 +16,8 @@ Responsive HTML table extended by Polymer and Material Design.
   <template>
     <script src="../webcomponentsjs/webcomponents-lite.js"></script>
     <link rel="import" href="s-table-lite.html">
+    <link rel="import" href="s-tbody.html">
+    <link rel="import" href="s-tr.html">
     <next-code-block></next-code-block>
   </template>
 </custom-element-demo>