Heroku and GoDaddy DNS configuration
This is definitely an issue on GoDaddy.
If you try the following, you can see that the domain has been setup correctly from Heroku's side:
curl -v -H "Host: www.ithehero.com" www.ithehero.com.herokudns.com
Also, if you check your DNS resolution, your CNAME's haven't been propagated at all: https://www.whatsmydns.net/#CNAME/www.ithehero.com
I would go back to GoDaddy and get them to have a look at this.