Updated installation instructions

README.md

@@ -1,5 +1,8 @@
 Linux System Information
 =========================
+[![Latest Stable Version](https://poser.pugx.org/ahaaje/linux-system-information/v/stable)](https://packagist.org/packages/ahaaje/linux-system-information)
+[![License](https://poser.pugx.org/ahaaje/linux-system-information/license)](https://packagist.org/packages/ahaaje/linux-system-information)
+[![composer.lock](https://poser.pugx.org/ahaaje/linux-system-information/composerlock)](https://packagist.org/packages/ahaaje/linux-system-information)
 
 This is a light-weight library to gather information (stats) about the Linux system it is running on.
 
@@ -16,4 +19,37 @@ Stats that can be fetched
 -------------------------
 - hostname
 - load average (for 1, 5 or 15 minutes)
-- memory, as total, available and used
+- memory as total, available and used
+
+### Requirements
+ - Linux
+ - PHP 5.5
+
+### Installation
+With [composer](https://getcomposer.org/) simply do `composer require ahaaje/linux-system-information` inside your project directory.
+
+### Usage
+This is from the example file. You should not need to require the auto loader if already using composer to manage your project requirements
+
+```php
+<?php
+require '../vendor/autoload.php';
+
+use Ahaaje\LinuxSystemInformation\System;
+
+try {
+    $system = new System();
+
+    echo 'Host:' . $system, PHP_EOL;
+    echo 'Load average last 5 minutes: ' . $system->getLoadAverage(5), PHP_EOL;
+    echo 'Total memory: ' . $system->getMemoryCategory('total'), PHP_EOL;
+    echo 'Used memory: ' . $system->getMemoryCategory('used'), PHP_EOL;
+    echo 'Available memory: ' . $system->getMemoryCategory('available'), PHP_EOL;
+} catch (\RuntimeException $e) {
+    // Some stat could not be accessed
+    echo get_class($e) . ' : ' . $e->getMessage(), PHP_EOL;
+} catch (\Exception $e) {
+    echo 'FATAL EXCEPTION: ' . $e->getMessage(), PHP_EOL;
+}
+
+```