Add offline dev to features in exampleSite

exampleSite/content/home/features.md

@@ -8,6 +8,9 @@ weight = 10
 - All out-of-the-box Reveal.js themes
 - Two custom Reveal.js themes (including this one)
 
+<br>
+[see the code on github](https://github.com/dzello/reveal-hugo)
+
 ---
 
 ## Features
@@ -16,4 +19,5 @@ weight = 10
 - Shortcodes for fragments, sections, slides & more
 - All Reveal.js parameters can be customized
 - Any Hugo section can be output as a presentation
+- Supports offline development or using a CDN