Add thoughtbot logo

README.md

@@ -112,3 +112,17 @@ Tokens generated.
 Go back to you App settings page, click "Add features and functionality >
 Permissions", then copy the "User OAuth Token" and set it to `SLACK_API_TOKEN`
 in your `.env` file.
+
+## About thoughtbot
+
+![thoughtbot](https://thoughtbot.com/brand_assets/93:44.svg)
+
+Gold Miner is maintained and funded by thoughtbot.
+The names and logos for thoughtbot are trademarks of thoughtbot, inc.
+
+We love open source software!
+See [our other projects][community] or
+[hire us][hire] to design, develop, and grow your product.
+
+[community]: https://thoughtbot.com/community?utm_source=github
+[hire]: https://thoughtbot.com?utm_source=github