Javadoc fix.
See #1. Added the canBeVersusScreen method to the VersusScreenAnalyser interface, and made sure the new implementation can handle resolutions other than 720p.
See #1: FrameConsumer now uses the new implementation of canBeVersusScreen.
Fixes #1: removed video size check.
Reduced visibility of constants.
Implement Runnable instead of Callable<Void>.