How to Host Rails Assets Through a CDN without pushing assets to Heroku

So I currently have too many assets to push to my free heroku account. I am currently hosting them on a hostgator server which is problematic as, by making a remote request for each image, and the server itself not being of the nature of say Amazon CloudFront which expedites and caches things explicitly for CDN, it visibly loads all the images all slow-like in the DOM. My question is, how can I serve my assets through CloudFront without pushing them to my heroku account?