Update index.html

index.html

@@ -18,6 +18,8 @@ img {.center}
 <xmp id="content" theme="github" style="display:none;">
 </xmp>
 
+<iframe src="https://www.eventbrite.com/e/mel-king-festschrift-tickets-44310764690" width="100%"></iframe>
+
 <script>
 	$('#content').load("readme.md", function() {
 		// $.getScript("../strapdown.js");