Update readme copyright and company name

README.md

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 # Turbo Native for iOS
 
-**Note:** The Hotwire frameworks are presented in beta form. We're using them all in production with HEY, but expect that significant changes might be made in response to early feedback.
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 **Build high-fidelity hybrid apps with native navigation and a single shared web view.** Turbo Native for iOS provides the tooling to wrap your [Turbo 7](https://github.com/hotwired/turbo)-enabled web app in a native iOS shell. It manages a single WKWebView instance across multiple view controllers, giving you native navigation UI with all the client-side performance benefits of Turbo.
 
 ## Features
@@ -41,13 +37,13 @@ The best way to get started with Turbo iOS to try out the demo app first to get
 ## Contributing
 
 Turbo iOS is open-source software, freely distributable under the terms of an [MIT-style license](LICENSE). The [source code is hosted on GitHub](https://github.com/hotwired/turbo-ios).
-Development is sponsored by [Basecamp](https://basecamp.com/).
+Development is sponsored by [37signals](https://37signals.com/).
 
 We welcome contributions in the form of bug reports, pull requests, or thoughtful discussions in the [GitHub issue tracker](https://github.com/hotwired/turbo-ios/issues).
 
 Please note that this project is released with a [Contributor Code of Conduct](CONDUCT.md). By participating in this project you agree to abide by its terms.
 
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-© 2020 Basecamp, LLC
+© 2023 37signals LLC