Update the README contents

Author: javiereguiluz

README.md

@@ -16,14 +16,17 @@ Requirements
 Installation
 ------------
 
-[Download Symfony][4] to install the `symfony` binary on your computer and run
-this command:
+There are 3 different ways of installing this project depending on your needs:
+
+**Option 1.** [Download Symfony CLI][4] and use the `symfony` binary installed
+on your computer to run this command:
 
 ```bash
 $ symfony new --demo my_project
 ```
 
-Alternatively, you can use Composer:
+**Option 2.** [Download Composer][6] and use the `composer` binary installed
+on your computer to run these commands:
 
 ```bash
 # you can create a new project based on the Symfony Demo project...
@@ -35,8 +38,8 @@ $ cd my_project/
 $ composer install
 ```
 
-If you want to test the demo without installing anything locally, you can also
-deploy it on Platform.sh, the official Symfony PaaS:
+**Option 3.** Click the following button to deploy this project on Platform.sh,
+the official Symfony PaaS, so you can try it without installing anything locally:
 
 <p align="center">
 <a href="https://console.platform.sh/projects/create-project?template=https://raw.githubusercontent.com/symfonycorp/platformsh-symfony-template-metadata/main/template-metadata-demo.yaml&utm_content=symfonycorp&utm_source=github&utm_medium=button&utm_campaign=deploy_on_platform"><img src="https://platform.sh/images/deploy/lg-blue.svg" alt="Deploy on Platform.sh" width="180px" /></a>
@@ -45,8 +48,10 @@ deploy it on Platform.sh, the official Symfony PaaS:
 Usage
 -----
 
-There's no need to configure anything to run the application. If you have
-[installed Symfony][4] binary, run this command:
+There's no need to configure anything before running the application. There are
+2 different ways of running this application depending on your needs:
+
+**Option 1.** [Download Symfony CLI][4] and run this command:
 
 ```bash
 $ cd my_project/
@@ -55,9 +60,15 @@ $ symfony serve
 
 Then access the application in your browser at the given URL (<https://localhost:8000> by default).
 
-If you don't have the Symfony binary installed, run `php -S localhost:8000 -t public/`
-to use the built-in PHP web server or [configure a web server][3] like Nginx or
-Apache to run the application.
+**Option 2.** Use a web server like Nginx or Apache to run the application
+(read the documentation about [configuring a web server for Symfony][3]).
+
+On your local machine, you can run this command to use the built-in PHP web server:
+
+```bash
+$ cd my_project/
+$ php -S localhost:8000 -t public/
+```
 
 Tests
 -----
@@ -74,3 +85,4 @@ $ ./bin/phpunit
 [3]: https://symfony.com/doc/current/setup/web_server_configuration.html
 [4]: https://symfony.com/download
 [5]: https://symfony.com/book
+[6]: https://getcomposer.org/