added nyholm as psr implementation example

Author: transistive

README.md

@@ -15,7 +15,7 @@ composer require laudis/neo4j-php-client
 The HTTP protocol requires [psr-7](https://www.php-fig.org/psr/psr-7/), [psr-17](https://www.php-fig.org/psr/psr-17/) and [psr-18](https://www.php-fig.org/psr/psr-18/) implementations. If there are not any available, composer can install them.
 
 ```bash
-composer require guzzlehttp/guzzle guzzlehttp/psr7 http-interop/http-factory-guzzle
+composer require nyholm/psr7 nyholm/psr7-server kriswallsmith/buzz
 ```
 
 ## General usage

composer.json

@@ -39,9 +39,9 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.0",
-        "guzzlehttp/guzzle": "7.*",
-        "guzzlehttp/psr7": "1.*",
-        "http-interop/http-factory-guzzle": "*"
+        "nyholm/psr7": "^1.3",
+        "nyholm/psr7-server": "^1.0",
+        "kriswallsmith/buzz": "^1.2"
     },
     "autoload": {
         "psr-4": {