Merge pull request #86 from karlhorky/add-demo-and-modal-note

Add demo, Note modal option in intro

README.md

@@ -1,6 +1,8 @@
 dialog-polyfill.js is a polyfill for `<dialog>`.
 
-`<dialog>` is an element for a popup box in a web page. See
+#### [Demo](http://demo.agektmr.com/dialog/)
+
+`<dialog>` is an element for a popup box in a web page, including a modal option. See
 [more information and demos](http://falken-testing.appspot.com/dialog/index.html)
 and the
 [HTML spec](http://www.whatwg.org/specs/web-apps/current-work/multipage/commands.html#the-dialog-element).