Improve documentation and examples

Author: yadaiio

README.md

@@ -1,11 +1,11 @@
 # clue/reactphp-ssdp
 
-[![CI status](https://github.com/clue/reactphp-ssdp/workflows/CI/badge.svg)](https://github.com/clue/reactphp-ssdp/actions)
+[![CI status](https://github.com/clue/reactphp-ssdp/actions/workflows/ci.yml/badge.svg)](https://github.com/clue/reactphp-ssdp/actions)
 [![installs on Packagist](https://img.shields.io/packagist/dt/clue/ssdp-react?color=blue&label=installs%20on%20Packagist)](https://packagist.org/packages/clue/ssdp-react)
 
-Async [Simple Service Discovery Protocol (SSDP)](http://en.wikipedia.org/wiki/Simple_Service_Discovery_Protocol), built on top of [ReactPHP](https://reactphp.org/).
+Async [Simple Service Discovery Protocol (SSDP)](https://en.wikipedia.org/wiki/Simple_Service_Discovery_Protocol), built on top of [ReactPHP](https://reactphp.org/).
 
-SSDP is part of [Universal Plug and Play (UPnP)](http://de.wikipedia.org/wiki/Universal_Plug_and_Play)
+SSDP is part of [Universal Plug and Play (UPnP)](https://de.wikipedia.org/wiki/Universal_Plug_and_Play)
 and is commonly used to discover network services on home networks without
 requiring any manual configuration, such as automatically discovering printers,
 multimedia devices and network routers.
@@ -15,7 +15,7 @@ This library implements SSDP as defined in the
 and uses HTTP over Multicast UDP (HTTPMU) as defined in the
 [IETF draft](https://tools.ietf.org/html/draft-goland-http-udp-01).
 As an alternative, some devices use DNS-Based Service Discovery (DNS-SD) instead
-as defined in [RFC 6763](http://tools.ietf.org/html/rfc6763).
+as defined in [RFC 6763](https://tools.ietf.org/html/rfc6763).
 
 **Table of Contents**
 
@@ -31,6 +31,10 @@ as defined in [RFC 6763](http://tools.ietf.org/html/rfc6763).
 Once [installed](#install), you can use the following code to search all available UPnP devices in your network:
 
 ```php
+<?php
+
+require __DIR__ . '/vendor/autoload.php';
+
 $client = new Clue\React\Ssdp\Client();
 
 $client->search()->then(
@@ -48,11 +52,11 @@ $client->search()->then(
 );
 ```
 
-See also the [examples](examples).
+See also the [examples](examples/).
 
 ## Install
 
-The recommended way to install this library is [through composer](http://getcomposer.org). [New to composer?](http://getcomposer.org/doc/00-intro.md)
+The recommended way to install this library is [through composer](https://getcomposer.org/). [New to composer?](https://getcomposer.org/doc/00-intro.md)
 
 ```JSON
 {
@@ -65,21 +69,21 @@ The recommended way to install this library is [through composer](http://getcomp
 This project aims to run on any platform and thus does not require any PHP
 extensions and supports running on legacy PHP 5.3 through current PHP 8+ and
 HHVM.
-It's *highly recommended to use PHP 7+* for this project.
+It's *highly recommended to use the latest supported PHP version* for this project.
 
 ## Tests
 
 To run the test suite, you first need to clone this repo and then install all
-dependencies [through Composer](https://getcomposer.org):
+dependencies [through Composer](https://getcomposer.org/):
 
 ```bash
-$ composer install
+composer install
 ```
 
 To run the test suite, go to the project root and run:
 
 ```bash
-$ php vendor/bin/phpunit
+vendor/bin/phpunit
 ```
 
 ## License