Merge #850

850: Add Ad Hoc to list of companies r=poteto a=k4y3ff

## Add Ad Hoc

- [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
- [X] (OPTIONAL) In your pull request message, add additional context on the interview process if necessary


Co-authored-by: kf Fellows <kf@adhocteam.us>

README.md

@@ -36,6 +36,7 @@ Additions to this document that are properly formatted will automatically be pus
 - [Accredible](https://www.accredible.com/careers) | Cambridge, UK / San Francisco, CA / Remote | Take home project, then a pair-programming and discussion onsite / Skype round.
 - [Acko](https://acko.com) | Mumbai, India | Phone interview, followed by a small take home problem. Finally a F2F or skype pair programming session
 - [Acumen](http://www.acumenci.com/joinourteam) | London, UK | Small take home test, and sit in on some sprint rituals on-site
+- [Ad Hoc](https://adhoc.team) | Remote / Washington, DC | Technical take-home assignment, followed by multiple video calls that are discussions of technical background and experience.
 - [Addstones](https://www.addstones.com) | Paris, FR / Singapore, SG / Bucharest, RO / London, UK | Multiple interviews, discussion of technical background and experiences. Sometimes we do a on-site unsupervised small exercise.
 - [Adeva](https://adevait.com) | New York, USA | 4 steps interviewing process that includes online coding assignment + lead engineer call.
 - [AdEx Network](https://www.adex.network) | Sofia, Bulgaria / Remote | Email screening process, followed by a take-home assignment