Update readme.

Author: becker

README.md

@@ -1,18 +1,20 @@
-# Laravel Zabbix API
+## Laravel Zabbix API
 
 This package provides a Zabbix API library for Laravel Framework. It uses the PhpZabbixApi class generated by the http://github.com/confirm/PhpZabbixApi package.
 
-### **NOTE: This version was tested with Zabbix Server 3.0.* only. Not sure if it works with other versions as well.**
+> **NOTE:** This version was tested with Zabbix Server 3.0.* only. Not sure if it works with other versions as well.
 
-### Installation
+#### Installation
 
-Enter in your Laravel application folder and require the package:
+To get started, you should add the `becker/laravel-zabbix-api` Composer dependency to your project:
 
 ```php
 composer require becker/laravel-zabbix-api
 ```
 
-### Register the Service Provider
+#### Register the Service Provider
+
+> You can skip this step if you are using Laravel 5.5 or higher. The package is automatically added to the Package Service Providers section of `app.php` file, due to the package auto-discovery feature.
 
 Open up the ``config/app.php``and register the new Service Provider:
 
@@ -28,28 +30,26 @@ Becker\Zabbix\ZabbixServiceProvider::class,
 //...
 ```
 
-### Publish the configuration file
+#### Publish the configuration file
 
 ```php
 php artisan vendor:publish --tag=zabbix
 ```
 This will create the ``config/zabbix.php`` file.
 
 
+#### Define your Zabbix Server configurations
 
-### Define your Zabbix Server configurations
-
-At your ``.env`` file, define the new Zabbix parameters:
+At your ``.env`` file, define the new Zabbix parameters, **without** any final forward slash:
 
 ```php
-//.env
-
 ZABBIX_HOST=http://your.zabbix.url
 ZABBIX_USERNAME=username
 ZABBIX_PASSWORD=password
 ```
 
-### Use it in your Controller
+
+#### Use it in your Controller
 
 ```php
 //app/Http/Controllers/TestController.php
@@ -64,27 +64,33 @@ use App\Http\Requests;
 
 class TestController extends Controller
 {
+    /**
+     * The ZabbixApi instance.
+     *
+     * @var \Becker\Zabbix\ZabbixApi
+     */
+    protected $zabbix;
 
     /**
      * Create a new Zabbix API instance.
      *
      * @return void
      */
-	public function __construct()
-	{
-		$this->zabbix = app('zabbix');
-	}
+    public function __construct()
+    {
+        $this->zabbix = app('zabbix');
+    }
 
     /**
-	 * Get all the Zabbix host groups
+     * Get all the Zabbix host groups.
      *
-	 * @return array
-	 */
+     * @return array
+     */
     public function index()
     {
-    	return $this->zabbix->hostgroupGet(['output' => 'extend']);
+        return $this->zabbix->hostgroupGet(['output' => 'extend']);
     }
 }
 ```
 
-### And that's it! :)
+And that's it! :beers: