How does the URL redirection work for Meteor and Godaddy

I have deployed my meteor app to some random name/url. I own the actual URL I want , myapp.com, at Godaddy. I did not deploy to that URL literally because I did not understand how the URL at Godaddy was going to be used at meteor. I believed I would have to do something over at Godaddy after I deployed. Now, I am ready to deploy with myapp.com on the meteor command line. What is going to happen? What steps will I have to take to make sure the url is properly directed over to the galaxy servers? I have read this article and the CNAME for my URL at Godaddy is already set to Eastern Us galaxy server. How does all this work?