Wednesday, January 9th, 2013, at 5:27 P.M:

The main menu (XRMainMenuWindowController) is created. Right now, buttons are used to represent each tab, but NSCollectionView might be used in the long run.
Thursday, January 10th, 2013, at 11:08 A.M:

1. Put XRWelcomeWindowController on screen
2. Integrate NSCollectionView inside XRWelcomeWindowController