Changing site from a folder onto the main domain

I am working on a website at http://www.candcbyj.com/wordpress/. I placed it on there under the wordpress folder while I was working on it so the person I am making it for could take a look at it without the general public (for the most part) being able to see it (or at least not seeing it from just going to the domain). I had a “coming soon” page up at the domain that I just deleted because I want to have the site go live.

I am looking for the best / easiest way to switch the whole site over from http://www.candcbyj.com/wordpress/ to just http://www.candcbyj.com. I hope I didn’t make a giant headache for myself.