Highlight community contributors

[astrogeco]

Is your feature request related to a problem? Please describe.
We don't have a way of publicly recognizing our contributors from the community

Describe the solution you'd like
Add a contributors or community section to Readme.md with people's github icon

Describe alternatives you've considered

• Use https://github.com/all-contributors/all-contributors
• Use https://opencollective.com/
• Use https://remarkablemark.org/blog/2019/10/17/github-contributors-readme/
• Have a list on the Wiki with github handles

[skliper]

Could be leveraged for #128

[zachar1a]

Having #128 would be the coolest addition for community members imo.