Yosemite Full Screen Button
If you have already updated to the latest OS X Yosemite, you might have noticed that the “fit to content” green button is now “fullscreen“. The old functionality still exist, it’s just hiding:
Hold Option and click the green button for the old “fit to content” style.
On a sitenote, if you haven’t already downloaded BetterSnap Tool, do yourself a favour and get it asap!