Merge #922

922: Added HeavenHR r=poteto a=heaventw

## Add HeavenHR

- [x] I have read the [contributing guidelines](https://github.com/poteto/hiring-without-whiteboards/blob/master/CONTRIBUTING.md)
- [x] I agree to the [Code of Conduct](https://github.com/poteto/hiring-without-whiteboards/blob/master/CODE_OF_CONDUCT.md)
- [x] I have followed the [format](https://github.com/poteto/hiring-without-whiteboards/blob/master/CONTRIBUTING.md#format) prescribed in the contributing guidelines
- [ ] (OPTIONAL) In your pull request message, add additional context on the interview process if necessary

Co-authored-by: Thomas Werner <thomas.werner@heavenhr.de>

README.md

@@ -321,6 +321,7 @@ Also check out [No Whiteboards](https://nowhiteboards.io) to search for jobs at
 - [Hashrocket](https://hashrocket.com) | Chicago, IL/Jacksonville Beach, FL | Remote pairing session, paid week pair programming with everyone on the team
 - [Headspring](https://headspring.com/about/careers) | Austin, TX; Houston, TX; Monterrey, Mexico | Take-home situational questionnaire and code exercise, with in-person follow up to discuss and pair for changes
 - [Healthify](https://healthify.us) | Remote & New York City, NY | Take-home project, discussion via Zoom, pair programming with us on our app for a day.
+- [HeavenHR](https://heavenhr.com) | Berlin, Germany | Take home project based on the candidate's experience and future responsibilities. Then discussion about the solution
 - [HE:labs](https://helabs.com) | Rio de Janeiro, Brazil & Remote | Take-home project and discussion via Skype.
 - [HelloFresh](https://www.hellofresh.com/jobs) | Berlin, Germany | Take-home project, discussion via Skype or on-site
 - [Heptio](https://www.heptio.com/jobs) | Seattle, WA; Remote | Take-home project, discussion on-site