Embed YouTube video - An Introduction to mRuby | Ruby Creator Yukihiro "Matz" Matsumoto on about page

https://www.youtube.com/watch?v=Xa08hqK7ozs

Add mruby3.0 video

Author: jbampton

about/index.html

@@ -17,4 +17,7 @@ <h2>About mruby</h2>
 
   {% include _latest_news.html %}
 
+  <iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/ZXbs9yuzv-E" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
+  <iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/Xa08hqK7ozs" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 </div>