Add AltSchool to the "In The Wild" section of the README

Author: thomaswrenn

README.md

@@ -3171,6 +3171,7 @@ Other Style Guides
  - **Aan Zee**: [AanZee/javascript](https://github.com/AanZee/javascript)
  - **Adult Swim**: [adult-swim/javascript](https://github.com/adult-swim/javascript)
  - **Airbnb**: [airbnb/javascript](https://github.com/airbnb/javascript)
+ - **AltSchool**: [AltSchool/javascript](https://github.com/AltSchool/javascript)
  - **Apartmint**: [apartmint/javascript](https://github.com/apartmint/javascript)
  - **Ascribe**: [ascribe/javascript](https://github.com/ascribe/javascript)
  - **Avalara**: [avalara/javascript](https://github.com/avalara/javascript)