Merge pull request #35 from githubschool/add-caption-mkaburis-gitdemo

Add caption and update image mkaburis-gitdemo

Author: jumainfomagnus

_slides/12-mkaburis-gitdemo.md

@@ -3,7 +3,8 @@ layout: slide
 title: "Welcome to our slide deck!"
 ---
 
-Caption here
+A huge fan of urban exploration, reading and public transit!
+
+![obiwan-octocat](https://octodex.github.com/images/octobiwan.jpg)
 
-![cooler-octocat](https://octodex.github.com/images/twenty-percent-cooler-octocat.png)
 {: .center}