Open URL

Hi,

this one seemed so obvious I actually spent the last 30 minutes googling, browsing the menu and checking the forums to find it.

Make an URL draggable to Dropbox, where it stays as a shortcut link. I'd rather use F3 + a key to open a website than actually having to go to the browser, search for my bookmark then click it.

Anyway, great work, I use DropZone more and more and am pretty happy with it.