Looking at your repository, it seems that the index.html file is actually named index .html, containing a space. I would believe this would create an issue with deploying your repository to GitHub Pages. Try renaming the file and giving time for the repository to update. This may fix your problem!
Hope this helps!
i am having a similar issue when i use the rc folder for the gh-pages sorce it loads however, i am using angular when i use the dist folder the page comes up blank or 404.