In case anyone is wondering, this plugin hides the "accessibility bar," i.e. the keyboard bar that appears when you tap on a form element in iOS: https://nolanwlawson.files.wordpress.com/2016/03/accessibili...
The accessibility bar is really annoying for hybrid app developers, because it's often not needed, and just takes up valuable screen real estate. As one of my coworkers put it, it has no purpose other than to announce, "Hi! I'm a WebView!"