Update getting-started.md

Author: Salakar

v3.1.*/getting-started.md

@@ -52,3 +52,34 @@ All in all, RNFirebase provides much faster performance over the web SDK and pro
 | ---------------------- | :---: | :---: | :---: |
 | Firebase Android SDK   | 10.2.0+ | 11.0.0 + | 11.2.0 + |
 | Firebase iOS SDK       | 3.15.0+ | 4.0.0 +  | 4.0.0 +  |
+
+
+
+## Contributors
+
+This project exists thanks to all the people who contribute. [[Contribute]](CONTRIBUTING.md).
+<a href="graphs/contributors"><img src="https://opencollective.com/react-native-firebase/contributors.svg?width=890" /></a>
+
+
+## Backers
+
+Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/react-native-firebase#backer)]
+
+<a href="https://opencollective.com/react-native-firebase#backers" target="_blank"><img src="https://opencollective.com/react-native-firebase/backers.svg?width=890"></a>
+
+
+## Sponsors
+
+Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/react-native-firebase#sponsor)]
+
+<a href="https://opencollective.com/react-native-firebase/sponsor/0/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/0/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/1/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/1/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/2/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/2/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/3/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/3/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/4/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/4/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/5/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/5/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/6/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/6/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/7/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/7/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/8/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/8/avatar.svg"></a>
+<a href="https://opencollective.com/react-native-firebase/sponsor/9/website" target="_blank"><img src="https://opencollective.com/react-native-firebase/sponsor/9/avatar.svg"></a>
+