Small screensaver for OS X written entirely in Swift. Includes configuration sheet and user defaults access.
If you want to run the latest build from Xcode using the shared scheme you have to create a symlink to the build products in the screen savers directory, e.g.
cd ~/Library/Screen\ Savers/ ln -s ../Developer/Xcode/DerivedData/SwiftCircle-fnjybnzpxxgbfpcfligmifriixpo/Build/Products/Debug/SwiftCircle.saver
Please don't just copy paste these two lines. The exact location of the build output is going to be different in your case.