Added Headout to INTHEWILD (apache#12734)

Signed-off-by: Shivansh Saini <shivanshs9@gmail.com>

INTHEWILD.md

@@ -193,6 +193,7 @@ Currently, **officially** using Airflow:
 1. [HBO](http://www.hbo.com/) [[@yiwang](/~https://github.com/yiwang)]
 1. [Handshake](https://joinhandshake.com/) [[@mhickman](/~https://github.com/mhickman)]
 1. [Handy](http://www.handy.com/careers/73115?gh_jid=73115&gh_src=o5qcxn) [[@marcintustin](/~https://github.com/marcintustin) / [@mtustin-handy](/~https://github.com/mtustin-handy)]
+1. [Headout](https://headout.com/) [[@shivanshs9](/~https://github.com/shivanshs9/)]
 1. [Healthjump](http://www.healthjump.com/) [[@miscbits](/~https://github.com/miscbits)]
 1. [HelloFresh](https://www.hellofresh.com) [[@tammymendt](/~https://github.com/tammymendt) & [@davidsbatista](/~https://github.com/davidsbatista) & [@iuriinedostup](/~https://github.com/iuriinedostup)]
 1. [Hipages](https://www.hipages.com.au/) [[@arihantsurana](/~https://github.com/arihantsurana)]