Update about.md

swaroopch · web-flow · commit f0957d96e32e · 2020-11-07T12:38:43.000-08:00
diff --git a/about.md b/about.md
@@ -30,6 +30,8 @@ For the ninth draft, I switched to [AsciiDoc format](http://asciidoctor.org/docs
 
 For the tenth draft, I switched to writing in Markdown + [GitBook](https://www.gitbook.com) format, using the [Spacemacs editor](http://spacemacs.org).
 
+Nov 2020: Since Gitbook abandoned their open source software, migrated to [Honkit, a maintained fork of Gitbook legacy](https://github.com/honkit/honkit).
+
 ## About the Author
 
 See {{ book.authorUrl }}
