Add images of sample reports/outcomes of the tool to the readme

**Is your feature request related to a problem? Please describe.**
This is a software package that is centered around reporting and visualizing issues in tables and graphs. Yet these graphs are nowhere to be found. A picture is worth more than a thousand pages of documentation about xml formats :)

Please make the "what you get" of this project a very "in your face" presentation. I checked the owasp page, documentation and github page and found nothing.

**Describe the solution you'd like**
A screenshot or two of two sample reports, with graphs and eye candy near the top of the readme file. So everyone that is remotely interested can easily see what they get.

**Describe alternatives you've considered**
Googling for images. This results in outdated images at low resolutions.

**Additional context**
I'm trying to add this tool to a presentation. Yet it's hard to show "what it can do" without any visualization. Making that easier, would make the product easier to recommend.

(sorry if i come off as strong, i think using more images is just a golden opportunity for the project. I always get a bit sad when somebody announces a project and has no screenshot of what it delivers. I've made that mistake myself too a few times 👍 )