Add mention about SignPath Foundation and free code certificate in Readme.md #681
Description
Hi
First, thanks for maintaining this tool! I used it a lot in the past!
Now I am the Developer Evangelist from SignPath and I noticed that there is no mention of us in the readme.
Could you please add this to your Readme:
## Code Signing
This program uses free code signing provided by [SignPath.io](https://signpath.io?utm_source=foundation&utm_medium=github&utm_campaign=MSBuildStructuredLog), and a free code signing certificate by the [SignPath Foundation](https://signpath.org?utm_source=foundation&utm_medium=github&utm_campaign=MSBuildStructuredLog)
If you want, I can send a Pull Request.
Thanks!