Add flexport as the user of the library (#160)

* Add flexport as the user of the library

* Update README.md

Co-authored-by: Jamie Kyle <[email protected]>

Author: sheki

README.md

@@ -57,6 +57,7 @@ export default class App extends React.Component {
 - [Dresez](https://dresez.pk/)
 - [Edcast](https://www.edcast.com/)
 - [Evidation Health](https://evidation.com/)
+- [Flexport](https://flexport.com/)
 - [Flyhomes](https://flyhomes.com)
 - [Gogo](https://gogoair.com)
 - [Gofore](https://gofore.com/en/home/)