[Last update 04-04-2017]
To install the command run the following:
npm i -g angular-cli-ghpages
Note: you have to create the dist folder in before (e.g.
ng build --prod)
ng build --prod --base-href "https://USERNAME.github.io/REPOSITORY/"
ngh
In case you use a custom domain for one of your repositories (like I do for this blog), you should use http instead
ng build --prod --base-href "http://YOURDOMAIN.com/REPOSITORY/"
ngh
For more information check angular-cli-ghpages GitHub Page.
There might be a problem with routing. If so check this FAQ