update readme

CONTRIBUTING.md

@@ -140,6 +140,8 @@ The `package.json` file contains various scripts for common tasks:
 
 When you're sending a pull request:
 
+- **Always open pull requests against the `dev` branch.**
+  Pull requests targeting `main` will be closed.
 - Prefer small pull requests focused on one change.
 - Verify that linters and tests are passing.
 - Review the documentation to make sure it looks good.

README.md

@@ -5,19 +5,14 @@ React-native wrapper for android & IOS google maps sdk
 ## Installation
 
 ```sh
-npm install react-native-google-maps-plus react-native-nitro-modules
+yarn add react-native-google-maps-plus react-native-nitro-modules
 
 > `react-native-nitro-modules` is required as this library relies on [Nitro Modules](https://nitro.margelo.com/).
 ```
 
 ## Usage
 
-```js
-import { GoogleMapsNitroView } from 'react-native-google-maps-plus';
-
-// ...
-<GoogleMapsNitroView color="tomato" />;
-```
+Checkout the example app in the [example](./example) folder.
 
 ## Contributing