message: Fix README regarding fullscreen option (fixes
diff: @@ -45,7 +45,7 @@ $( selector ).imageLightbox({
  button: false, // bool; show close button
  caption: false, // bool; show captions
  enableKeyboard: true, // bool; enable keyboard shortcuts (arrows Left/Right and Esc)
  - fullscreen: true // bool; enable fullscreen (enter/return key)
  + fullscreen: false // bool; enable fullscreen (enter/return key)
  gutter: 10, // integer; window height less height of image as a percentage
  offsetY: 0, // integer; vertical offset in terms of gutter
  navigation: false, // bool; show navigation
  