The video presents version 1.4.1 (last 10 seconds of the video), the website only lists version 0.4.1. I assume you changed the version number after finishing the video?
It was hard/impossible for me to read the R code in the video while playing it at 1080p.
http://fasterstat.com/Product produsing -> producing poverfull -> powerful
http://fasterstat.com/ anoher -> another
There is also inconsistent use of 'Addin' and 'Add-In'.