Updated README.md

Dynamic/AJAX/README.md

@@ -3,7 +3,7 @@
 1. A static _.html_ page (either _stats_basic.html_ or _stats_bootstrap.html_) is sent to the client
 2. As soon as the page is loaded into the browser, a GET request is sent to the server and _ajax_stats.py_ is executed
 3. The server responds with a JSON object containing statistics about the system
-4. Whenever the _refresh_ button is pressed these last two steps are repeated
+4. Whenever the _refresh_ button is pressed these last two steps are repeated. If _auto-refresh-checkbox_ is checked, last two steps are repeated at regular intervals.
 
 ## Endpoints