Screensaver with flying JavaButton

Requires MacOS X 10.13+ on the master branch.

Version 2 added a lot of Duke mascots running on the floor.

Version 3 adds shadows to both Duke and JavaButton objects.

• Copy FlyingJavabo.saver to /Users/user/Library/Screen Savers/.
• Open System Preferences and find Flying Javabutton in the Screensaver pane.
  • Sometimes the option is hidden under grey More label.