docs: update README to include testing application pre-requisites and clarify types synchronization

README.md

@@ -53,7 +53,6 @@ cd openvidu-meet
 > [!NOTE]
 > For development purposes, the backend application uses the `backend/.env.development` file to load environment variables. You can customize the values in this file to suit your local development environment.
 
-
 ```bash
 cd backend && \
 npm run start:dev
@@ -78,11 +77,21 @@ This command will build the frontend application and move the files to the backe
 
 After running these commands, you can access the frontend application at [http://localhost:6080](http://localhost:6080).
 
-
 ## Testing
 
 This repository offers a testing application that allows you to test the OpenVidu Meet.
 
+### Pre-requisites
+
+To run the testing application, you need to have the following pre-requisites installed:
+
+- [Node.js](https://nodejs.org/en/download/) (version 22 or higher)
+- LiveKit CLI installed and configured.
+
+```bash
+curl -sSL https://get.livekit.io/cli | bash
+```
+
 To run the testing application, follow these steps under the root directory:
 
 1. Install the dependencies:
@@ -100,7 +109,6 @@ npm run start
 
 After running these commands, you can access the testing application at [http://localhost:5080](http://localhost:5080).
 
-
 ## Build (with docker)
 
 ### Build the backend image