README updated;

README.md

@@ -9,7 +9,109 @@
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 Lyra is a payment gateway that supports offline purchase as well. There are two defined gateway by default, but you can
-implement your owns.
+implement your own gateway(s).
+
+## Installation
+
+Via composer
+
+```bash
+composer require hans-thomas/lyra
+```
+
+Then publish the config file
+
+```bash
+php artisan vendor:publish --tag lyra-config
+```
+
+## Usage
+
+Lyra supports online and offline modes. First we are going to introduce the online mode.
+
+### Online purchase
+
+#### Pay
+
+To pay a purchase, you can simply call `pay` method and pass the amount.
+
+```php
+Lyra::pay(10000);
+```
+
+#### getRedirectUrl
+
+After calling `pay` method, you can call `getRedirectUrl` method to get the gateway url as string.
+
+```php
+Lyra::pay(10000)->getRedirectUrl();
+```
+
+#### redirect
+
+Also, you can call `redirect` method to redirect the user to the gateway url after calling the `pay` method.
+
+```php
+Lyra::pay(10000)->redirect();
+```
+
+#### setGateway
+
+You can set another gateway **before calling the `pay` method** and override the default one.
+
+```php
+Lyra::setGateway(Payir::class, 10000)->pay();
+```
+
+#### verify
+
+To verify the purchase, on callback, you can call `verify` method and pass the amount of payment.
+
+```php
+Lyra::verify(10000);
+```
+
+#### getInvoice
+
+After calling `pay` method, you can get the created invoice using `getInvoice` method.
+
+```php
+Lyra::pay(10000)->getInvoice();
+```
+
+### Offline purchase
+
+#### pay
+
+To purchase an offline payment, you must call `offline` method first and then `pay` method.
+
+```php
+Lyra::offline()->pay($file, $amount = 10000);
+```
+
+#### getInvoice
+
+Also, in offline mode, you can call `getInvoice` method to get the created invoice after the `pay` method.
+
+```php
+Lyra::offline()->pay($file, 10000)->getInvoice();
+```
+
+#### accept
+
+To accept an offline purchase, call `accept` method and pass the related invoice.
+
+```php
+Lyra::offline()->accept($invoice);
+```
+
+#### deny
+
+To deny a purchase, call `deny` method.
+
+```php
+Lyra::offline()->deny($invoice);
+```
 
 ## Contributing
 

src/Facades/Lyra.php

@@ -18,6 +18,7 @@
  * @method static Invoice          getInvoice()
  *
  * @see LyraService
+ * @see LyraOfflineService
  */
 class Lyra extends Facade
 {