Update README (#2913)

* Made it clear in the README that the requirement for yarn is related to running the Development environment

* Added table and info about our versioning strategy

* Some copy changes

* Copy change

README.md

@@ -17,6 +17,17 @@ You can integrate with Adyen Web in two ways:
 -   [API key](https://docs.adyen.com/development-resources/how-to-get-the-api-key)
 -   [Client key](https://docs.adyen.com/development-resources/client-side-authentication#get-your-client-key)
 
+## Drop-in/Components lifecycle
+| Major version | State      | Deprecated   | End-of-life  |
+|---------------|------------|--------------|--------------|
+| 6.x.x         | Active     | ---          | ---          |
+| 5.x.x         | Inactive   | TBA          | TBA          |
+| 4.x.x         | Inactive   | TBA          | TBA          |
+| 3.x.x         | Deprecated | October 2024 | October 2025 |
+
+More information about our versioning and the Drop-in/Components lifecycle can be found [here](https://docs.adyen.com/online-payments/upgrade-your-integration/)
+
+
 ## Installation
 
 We only provide full support when you use one of these methods of installation.
@@ -36,18 +47,18 @@ import { AdyenCheckout } from '@adyen/adyen-web';
 import '@adyen/adyen-web/styles/adyen.css';
 ```
 
-### Using a <script> tag
+### Using a `<script>` tag
 
 You can also import Adyen Web using a `<script>` tag, as shown in the [Web Components integration guide](https://docs.adyen.com/checkout/components-web#step-2-add-components).
 
-## Development
+## Running the Development Environment
 
-Requirements:
+**Requirements:**
 
 -   Node v20.12.2
 -   Yarn
 
-To run the development environment:
+**To run the environment:**
 
 1. Clone [this repository](https://github.com/Adyen/adyen-web).
 2. Create a `.env` file on your project's root folder following the example in [`env.default`](env.default) and fill in the environment variables.
@@ -184,11 +195,11 @@ Have a look at our [contributing guidelines](https://github.com/Adyen/.github/bl
 
 ## See also
 
--   [Why we open sourced Adyen Web](https://www.adyen.com/blog/why-we-opened-sourced-our-web-framework)
 -   [Complete documentation for Adyen Web](https://docs.adyen.com/checkout/)
 -   [API Explorer](https://docs.adyen.com/api-explorer/)
 -   [Example integrations](https://github.com/adyen-examples)
 -   [Adyen Components JS Sample Code](https://github.com/Adyen/adyen-components-js-sample-code)
+-   [Why we open sourced Adyen Web](https://www.adyen.com/blog/why-we-opened-sourced-our-web-framework)
 
 ## Support