chore: update README to template

README.md

@@ -1,12 +1,16 @@
-# Google Maps JavaScript MarkerClusterer
-
 [![npm](https://img.shields.io/npm/v/@googlemaps/markerclusterer)](https://www.npmjs.com/package/@googlemaps/markerclusterer)
-![Build](https://github.com/googlemaps/js-markerclusterer/workflows/Test/badge.svg)
+![Tests/Build Status](https://github.com/googlemaps/js-markerclusterer/workflows/Test/badge.svg)
 ![Release](https://github.com/googlemaps/js-markerclusterer/workflows/Release/badge.svg)
+![Stable](https://img.shields.io/badge/stability-stable-green)
 [![codecov](https://codecov.io/gh/googlemaps/js-markerclusterer/branch/main/graph/badge.svg)](https://codecov.io/gh/googlemaps/js-markerclusterer)
-![GitHub contributors](https://img.shields.io/github/contributors/googlemaps/js-markerclusterer?color=green)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
-[![](https://github.com/jpoehnelt/in-solidarity-bot/raw/main/static//badge-flat.png)](https://github.com/apps/in-solidarity)
+[![solidarity](https://github.com/jpoehnelt/in-solidarity-bot/raw/main/static//badge-flat.png)](https://github.com/apps/in-solidarity)
+
+![GitHub contributors](https://img.shields.io/github/contributors/googlemaps/js-markerclusterer?color=green)
+[![Discord](https://img.shields.io/discord/676948200904589322?color=6A7EC2&logo=discord&logoColor=ffffff)][Discord server]
+[![GitHub License](https://img.shields.io/github/license/googlemaps/js-markerclusterer?color=blue)](LICENSE)
+
+# Google Maps JavaScript MarkerClusterer
 
 ## Description
 
@@ -18,7 +22,12 @@ The library creates and manages per-zoom-level clusters for large amounts of mar
 
 See the [history section](#history) and [migration section](#migration) for how this library relates to [@google/markerclusterer][@google/markerclusterer] and [@googlemaps/markerclustererplus][@googlemaps/markerclustererplus].
 
-## Install
+## Requirements
+
+- A modern frontend framework like Angular, React, or Vue.js
+- An [API key][api-key]
+
+## Installation
 
 Available via npm as the package [@googlemaps/markerclusterer](https://www.npmjs.com/package/@googlemaps/markerclusterer).
 
@@ -44,9 +53,11 @@ npm i -D @types/google.maps
 
 ## Documentation
 
-The [reference documentation](https://googlemaps.github.io/js-markerclusterer/) is generated from the TypeScript definitions.
+The [documentation] is generated from the TypeScript definitions.
 
-## Examples
+## Usage
+
+### Examples
 
 ```js
 import { MarkerClusterer } from "@googlemaps/markerclusterer";
@@ -100,6 +111,42 @@ The API of [@googlemaps/markerclusterer][@googlemaps/markerclusterer] has change
 - The `MarkerClusterer` class is still an instance of `google.maps.OverlayView`, but uses `google.maps.Marker`s instead of `google.maps.Overlay` to render the clusters. This solves issues related to the usage of map panes and click handlers.
 - @googlemaps/markerclusterer supports Marker and Map [a11y improvements](https://cloud.google.com/blog/products/maps-platform/improved-accessibility-maps-javascript-api).
 
+## Contributing
+
+Contributions are welcome and encouraged! If you'd like to contribute, send us a [pull request] and refer to our [code of conduct] and [contributing guide].
+
+## Terms of Service
+
+This library uses Google Maps Platform services. Use of Google Maps Platform services through this library is subject to the Google Maps Platform [Terms of Service].
+
+This library is not a Google Maps Platform Core Service. Therefore, the Google Maps Platform Terms of Service (e.g. Technical Support Services, Service Level Agreements, and Deprecation Policy) do not apply to the code in this library.
+
+## Support
+
+This library is offered via an open source [license](LICENSE). It is not governed by the Google Maps Platform Support [Technical Support Services Guidelines](https://cloud.google.com/maps-platform/terms/tssg), the [SLA](https://cloud.google.com/maps-platform/terms/sla), or the [Deprecation Policy](https://cloud.google.com/maps-platform/terms) (however, any Google Maps Platform services used by the library remain subject to the Google Maps Platform Terms of Service).
+
+This library adheres to [semantic versioning] to indicate when backwards-incompatible changes are introduced. Accordingly, while the library is in version 0.x, backwards-incompatible changes may be introduced at any time.
+
+If you find a bug, or have a feature request, please [file an issue] on GitHub. If you would like to get answers to technical questions from other Google Maps Platform developers, ask through one of our [developer community channels]. If you'd like to contribute, please check the [contributing guide].
+
+You can also discuss this library on our [Discord server].
+
 [@googlemaps/markerclustererplus]: https://www.npmjs.com/package/@googlemaps/markerclustererplus
 [@google/markerclusterer]: https://www.npmjs.com/package/@google/markerclusterer
 [@googlemaps/markerclusterer]: https://www.npmjs.com/package/@googlemaps/markerclusterer
+
+[api-key]: https://developers.google.com/maps/documentation/android-sdk/get-api-key
+[devsite-guide]: https://developers.google.com/maps/documentation/android-sdk/utility
+[gmp-start]: https://console.cloud.google.com/google/maps-apis/start
+[maps-sdk]: https://developers.google.com/maps/documentation/android-sdk
+[documentation]: https://googlemaps.github.io/js-markerclusterer
+
+[code of conduct]: CODE_OF_CONDUCT.md
+[contributing guide]: CONTRIBUTING.md
+[developer community channels]: https://developers.google.com/maps/developer-community
+[Discord server]: https://discord.gg/hYsWbmk
+[file an issue]: https://github.com/googlemaps/js-markerclusterer/issues/new/choose
+[pull request]: https://github.com/googlemaps/js-markerclusterer/compare
+[semantic versioning]: https://semver.org
+[similar inquiry]: https://github.com/googlemaps/js-markerclusterer/issues
+[Terms of Service]: https://cloud.google.com/maps-platform/terms