Basic readme

Author: scaytrase

README.md

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 # WebSMS PHP Library
 
+A tiny library for sending SMS via [WebSMS](http://websms.ru/) gateway. 
+This gateway requires you to be registered in order to send SMS.
+
 ## Installation
 
+The best way to handle dependencies is to use Composer
+
+### Composer
+
+```bash
+    composer require "scaytrase/websms-php"
+```
+
 ## Usage
+
+```php
+    $driver = new JsonDriver();
+    $connection = new Connection($driver, 'username', 'secret');
+    
+    // Optionally check that connection runs well
+    // $connection->verify(); 
+    // echo $connection->getBalance(); 
+    
+    $message = new Message('+79991234567', 'test message');
+    $connection->send($message);
+```