Describing features + CI fix (#1)

* Describing features

* wording improvement

* Adding return type

* Temporarily removing the composer install till we have a new one.

Co-authored-by: Tejas Navghane <[email protected]>

---------

Co-authored-by: Tejas Navghane <[email protected]>

Author: escopecz

Config/services.php

@@ -5,7 +5,7 @@
 use MauticPlugin\SparkpostBundle\Mailer\Factory\SparkpostTransportFactory;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
 
-return static function (ContainerConfigurator $configurator) {
+return static function (ContainerConfigurator $configurator): void {
     $services = $configurator->services()
         ->defaults()
         ->autowire()

README.md

@@ -1,9 +1,9 @@
 ### Mautic Sparkpost Plugin
 
-This plugin enable Mautic 5 to run Sparkpost as a transport.
+This plugin enable Mautic 5 to run Sparkpost as an email transport. Features:
+- API transport. This transport can send up to 2000 emails per API request which makes it very fast compared to SMTP.
+- Bounce webhook handling. This plugin will unsubscribe contacts in Mautic based on the hard bounces while Sparkpost will take care of the soft bounce retrieals.
 
-#### Usage
-`composer require ts-navghane/sparkpost-plugin`
 
 #### Mautic Mailer DSN Scheme
 `mautic+sparkpost+api`