Add Highlight as a production user (#483)

README.md

@@ -7,7 +7,7 @@
 
 A React component that let's you mention people in a textarea like you are used to on Facebook or Twitter.
 
-Used in production at [Signavio](https://signavio.com), [State](https://state.com), [Snips](https://snips.ai), [Swat.io](https://swat.io), [GotDone](https://www.gotdone.me), [Volinspire](https://volinspire.com), [Marvin](https://amazingmarvin.com), [Timely](https://timelyapp.com), [GuideFitter](https://www.guidefitter.com/), [Evite](https://www.evite.com/), [Publer](https://publer.me/), [Kontentino](https://www.kontentino.com/), [Wix.com](https://wix.com) and [you?](https://github.com/signavio/react-mentions/edit/master/README.md)
+Used in production at [Signavio](https://signavio.com), [State](https://state.com), [Snips](https://snips.ai), [Swat.io](https://swat.io), [GotDone](https://www.gotdone.me), [Volinspire](https://volinspire.com), [Marvin](https://amazingmarvin.com), [Timely](https://timelyapp.com), [GuideFitter](https://www.guidefitter.com/), [Evite](https://www.evite.com/), [Publer](https://publer.me/), [Kontentino](https://www.kontentino.com/), [Wix.com](https://wix.com), [Highlight](https://highlight.run/) and [you?](https://github.com/signavio/react-mentions/edit/master/README.md)
 
 ## Getting started