adding ko.fi button to index doc

docs/templates/patreon.html

@@ -1,4 +1,5 @@
 <h3>Support Us</h3>
 <ul>
     <li><a href="https://www.patreon.com/bePatron?u=572110" data-patreon-widget-type="become-patron-button">Support EVEProsper On Patreon</a><script async src="https://c6.patreon.com/becomePatronButton.bundle.js"></script></li>
+    <li><script type='text/javascript' src='https://ko-fi.com/widgets/widget_2.js'></script><script type='text/javascript'>kofiwidget2.init('Buy Us A Coffee', '#46b798', 'A35538P5');kofiwidget2.draw();</script> </li>
 </ul>