Add a note for future development

src/documents/templates/documents/index.html

@@ -6,5 +6,6 @@
     <meta charset="utf-8">
   </head>
   <body>
+		{# One day someone (maybe even myself) is going to write a proper web front-end for Paperless, and this is where it'll start. #}
   </body>
 </html>