Anyways, the day that Atom was announced as open-source I went over to the Github page and looked into building. Unfortunately, the only Linux distro officially supported (at the time) is Ubuntu 12.04, and I am currently using Mint 16. I figured it shouldn't be too bad to get Atom to build on Mint 16, so I spent that whole morning getting it to work. Here's the steps I took to build, which worked fairly well for me. I even went through the process twice to make sure. Note, Atom currently only runs on 64 bit systems.
(If you want to see the troubles I dealt with, check out this issue)