So I have an organization created in Github and I created a project in that organization. Now I can create the site for this project by creating the branch gh-pages and pushing the html files here. I want to point a subdomain to this github pages site. For example, I have a domain called testdomain.com and I want app.testdomain.com should point to github pages located at http://orgname.github.io/app I went through the documentation but I can't understand how to make this redirect. Any leads will be helpful.
Redirect Github project page to a subdomain
dns;cname;github