Merge #940

940: added 4degrees and a category for companies 0-9 r=poteto a=Dsinghbailey

4Degrees also finishes the interview process by introducing final round candidates to their potential team members in several small meetings and a dinner or lunch. 

<!--
Thank you for contributing!

Pull requests that do not adhere to the format will be rejected. Please ensure
you complete the following checkboxes.

Please also:

- Add one company at a time.
- Insert in alphabetical order
- Do not sort other listings
-->

## Add/Update/Remove <CompanyName>

- [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

<!--
Please give additional context about the interview process if necessary.
-->


Co-authored-by: Darian Bailey <darian@4degrees.ai>

README.md

@@ -31,6 +31,9 @@ Also check out [No Whiteboards](https://nowhiteboards.io) to search for jobs at
 
 ---
 
+## 0 - 9
+- [4Degrees](https://4degrees.ai/about/) | Chicago, Illinois | Collaborative pair-programming exercise done through video chat that's representative of the responsibilities of the job then a take-home programming task.
+
 ## A - C
 - [Ableton](https://www.ableton.com/en/about) | Berlin, Germany | Take-home programming task (discussed via Skype), then pair programming and debugging session on-site
 - [Abstract](https://angel.co/abstract/jobs) | San Francisco, CA