Fix README not displaying correctly

Author: amandio

README.md

@@ -1,35 +1,41 @@
-#PHP SDK for uSendIt SMS Gateway
+# PHP SDK for uSendIt SMS Gateway
+
 This is an unofficial PHP sdk for uSendIt SMS gateway platform.
 For more information about request and response parameters, please refer to official documentation  [here](https://usendit.co.mz/apiusendit).
 
-##Installation
+## Installation
+
 Before you begin to use this SDK make sure that, you have already have an account at [uSendIt](https://usendit.co.mz).
 If not please [create one](https://usendit.co.mz/criarconta).
 
-####Install Using Composer
+#### Install Using Composer
+
 The easiest way to install is using Composer.
 
 ```
 composer require codeonweekends/usendit-php-sdk
 ```
 
-####Download ZIP file or Clone
+#### Download ZIP file or Clone
+
 Optionally you can download the repository directly to your project folder. Just click [here](https://github.com/codeonweekends/usendit-php-sdk/archive/master.zip).
 
 Or clone the repository to your project folder.
+
 ```
 git clone https://github.com/codeonweekends/usendit-php-sdk.git
 ```
 
-##How to Schedule SMS'S
+## How to Schedule SMS'S
 There are two available methods to send SMS.
 
 ```
 sendMessage()
 ```
 The ```sendMessage()``` methods is used when you need to schedule a single SMS.
 
-###Schedule single SMS
+### Schedule single SMS
+
 ```php
 // Create a new SMS object
 $sms = new SMS(MSISDN, MOBILE_OPERATOR, MESSAGE);