add hosts info to about page

about.md

@@ -15,3 +15,18 @@ Little did he know that Chris had been thinking about starting a Julia podcast
 for a while by then.
 It was the missing spark for ignition.
 The two got to work immediately and here we are.
+
+## Your hosts
+
+Julia has a rich and diverse community.
+You, too, could help us tell its story and introduce us to others.
+We'd love to hear from you: send us your episodes or co-host with us.
+Get in touch at [`[email protected]`](mailto:[email protected]).
+
+### Chris Rackauckas
+
+**todo** include mugshot and short bio
+
+### Michael Tiemann
+
+**todo** include mugshot and short bio