zurb/twentytwenty — pull request #10 by niqjohnson (2014-02-04 17:54:13+00:00)
Title: Added an option to set the before/after orientation

Love this plugin! I needed the before/after sliding motion to be up-and-down as opposed to left-and-right, so I added a second option, `orientation`, to choose which direction the handles can be moved. The default is horizontal (left-to-right); setting `orientation: 'vertical'` will change to an up-and-down motion.