I have a quite "complete" github ( https://github.com/franciscop/ ) and still totally agree with this article. Githubs profiles/repos are not for resumes. They are for many other reasons, but if that's your main reason it shows.

On the other hand some employers might find you straight from your github or some of the projects you have made. I was also contacted as one of the "top devs" (whatever that means) of CSS and JS in my country according to http://git-awards.com/.