I'm happy to email it to you! My email's at the bottom of the blog post. I'm also working on getting that starter code posted publicly.
EDIT: the code is now posted here: https://github.com/reberhardt7/cs110l-spr-2020-starter-code
EDIT: the code is now posted here: https://github.com/reberhardt7/cs110l-spr-2020-starter-code