Update README file

README.md

@@ -1,8 +1,44 @@
 ## Bestoon php client
 
-### Install
+### Installation
 
 you can install client with composer
 ```
 composer require bestoon/client
-```
+```
+
+## Usage : Setconfig
+
+You should set your API token key first with instance of client
+
+```php
+use Bestoon\Client;
+
+$client = new Client([
+    'token' => 'YOUR-TOKEN'
+]);
+```
+
+### Manage stats
+You can manage your stats with generalStat method
+
+```php
+$stats = $client->generalStat();
+
+var_dump($stats);
+```
+
+### Set incom
+Set your income with icome with with amount and text in arguments
+```php
+$client->income('1000000','Test');
+```
+
+### Set expense
+Set your expense with icome with with amount and text in arguments
+```php
+$client->expense('1000000','Test');
+```
+
+### License
+The MIT License (MIT). Please see [License File](LICENSE) for more information.