Cmd-Shift-G (Ctrl-Shift-G for windows/linux users) to ask george, using the entire contents of your current text editor as input.
Results will show up in a notification.
NEW: You can now use the command create-files (from the packages menu or the command palette) to have george-atom create a file for each problem in the current assignment and populate each file with the initial text given to us on the SE 212 site.
george-atom determines your assignment number by scanning through your open projects and finding one with a number in it -- so make sure to have something like "Assignment 3" or "A6" as your assignment folder. Also, if you happen to have another project folder with a different number in it, george-atom might choose that one, so.. don't :)
Also, adds syntax highlighting thanks to @georgeutsin