chore(readme): description fixes

chore(readme): description fixes

README.md

@@ -4,8 +4,9 @@
 [![Total Downloads](https://poser.pugx.org/wpdesk/wp-wpdesk-rating-petition/downloads)](https://packagist.org/packages/wpdesk/wp-wpdesk-rating-petition) 
 [![License](https://poser.pugx.org/wpdesk/wp-wpdesk-rating-petition/license)](https://packagist.org/packages/wpdesk/wp-wpdesk-rating-petition)
 
-WordPress Library to ask for good rate in repository.
-====================================================
+# Rating Petition
+
+A WordPress library which can be used to encourage the plugin users to review and rate it in WordPress repository.
 
 ## Requirements
 
@@ -13,7 +14,7 @@ PHP 7.0 or later.
 
 ## Installation via Composer
 
-In order to install the bindings via Composer run the following command:
+In order to install the bindings via [Composer](http://getcomposer.org/) run the following command:
 
 ```bash
 composer require wpdesk/wp-wpdesk-rating-petition
@@ -21,7 +22,8 @@ composer require wpdesk/wp-wpdesk-rating-petition
 
 ## Example usage
 
-### When using in shipping zones:
+### To use it in the shipping zones area:
+
 ```php
 function init_repository_rating() {
     $time_tracker = new \WPDesk\RepositoryRating\TimeWatcher\ShippingMethodInstanceWatcher(
@@ -40,7 +42,7 @@ function init_repository_rating() {
 }
 ```
 
-### When using in shipping method:
+### To use it on the shipping method screen:
 
 ```php
 <?php