Add player.h and videoScrubber.h as example for signatures
Commented and fixed Observer.
Added PixelDiff Creation to DifferenceFactory.
Extends, fixes and comments DifferenceFactory.
Comments EarthMoversHistogramDiff and adds constructor.
Removes OverlayFactory.
Adds comments for thrown exceptions to DifferenceFactory.
Comments and extends FilterFactory.
Removes VideoSaverFactory.
Merge branch 'CommentingTheModelPhaseTwo' of https://github.com/V02460/CTT
Fixes and Comments VideoSaver.
Removes YUVVideoSaver.
Comments VideoFileType.
Comments HSL and YUVPixelDiff.
Ads constructors for YUV and HSLPixelDiff.
Adds Hue and Saturation Histograms.
Comment BlurFilter
Comment CoffeeFilter
Comment GreyscaleFilter
Comment MixFilter