docs: updated readme

README.md

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+# Stripe PHP bindings
+
+[![Latest Stable Version](https://poser.pugx.org/starfolksoftware/flutterwave-php/v/stable.svg)](https://packagist.org/packages/starfolksoftware/flutterwave-php)
+[![Total Downloads](https://poser.pugx.org/starfolksoftware/flutterwave-php/downloads.svg)](https://packagist.org/packages/starfolksoftware/flutterwave-php)
+[![License](https://poser.pugx.org/starfolksoftware/flutterwave-php/license.svg)](https://packagist.org/packages/starfolksoftware/flutterwave-php)
+[![Code Coverage](https://coveralls.io/repos/starfolksoftware/flutterwave-php/badge.svg?branch=master)](https://coveralls.io/r/starfolksoftware/flutterwave-php?branch=master)
+
+The Flutterwave PHP library provides convenient access to the Flutterwave API from
+applications written in the PHP language. It includes a pre-defined set of
+classes for API resources that initialize themselves dynamically from API
+responses which makes it compatible with a wide range of versions of the Flutterwave
+API.
+
+## Requirements
+
+PHP 8.0 and later.
+
+## Composer
+
+You can install the bindings via [Composer](http://getcomposer.org/). Run the following command:
+
+```bash
+composer require starfolksoftware/flutterwave-php
+```
+
+To use the bindings, use Composer's [autoload](https://getcomposer.org/doc/01-basic-usage.md#autoloading):
+
+```php
+require_once('vendor/autoload.php');
+```
+
+## Dependencies
+
+Any package that implements [psr/http-client-implementation package](https://packagist.org/providers/psr/http-client-implementation)
+
+## Getting Started
+
+Simple usage looks like:
+
+```php
+use StarfolkSoftware\Flutterwave\Client as FlutterwaveClient;
+use StarfolkSoftware\Flutterwave\Options\CreatePlanOptions;
+use StarfolkSoftware\Flutterwave\Options;
+
+$flutterwave = new FlutterwaveClient(new Options([
+    'secretKey' => 'secret',
+]));
+
+$customer = $flutterwave->plans->create(new CreatePlanOptions([
+    'name' => 'Test Plan',
+    'amount' => 100,
+    'interval' => 'monthly'
+]));
+
+echo $customer;
+```
+
+## Documentation
+
+See the [PHP API docs](https://developer.flutterwave.com/reference#introduction-1).