added updated SVG images, added README file, added compnay logo and wate...

...rmarks, corrected scanning animation for 1920px resolution

@mmeiers @swbloom @stulees @donnapep @sylvianguy PR adding in an updated ReadMe file, watermarks, mock company logo and correcting animations for the scanning of the reverse of the cards for higher resolution displays. 

From running the display on 4K it looks like the animation now starts and stops in the right place at 4K and 1920px, but please shout if you see something weird with it. Thanks!