diff --git a/.gitignore b/.gitignore
index 58969c4..91b23b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,18 +1,12 @@
 .idea
-.php_cs
-.php_cs.cache
-.php-cs-fixer.cache
 .phpunit.result.cache
-.phpunit.cache/
 .phpunit.cache
-.DS_STORE
-build
 composer.lock
 coverage
 phpunit.xml
-psalm.xml
+phpstan.neon
 testbench.yaml
 vendor
 node_modules
-phpstan.neon
-/local
+.phpactor.json
+build
diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
deleted file mode 100644
index 8d8a790..0000000
--- a/.php-cs-fixer.dist.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-$finder = Symfony\Component\Finder\Finder::create()
-    ->in([
-        __DIR__ . '/src',
-        __DIR__ . '/tests',
-    ])
-    ->name('*.php')
-    ->notName('*.blade.php')
-    ->ignoreDotFiles(true)
-    ->ignoreVCS(true);
-
-return (new PhpCsFixer\Config())
-    ->setRules([
-        '@PSR12' => true,
-        'array_syntax' => ['syntax' => 'short'],
-        'ordered_imports' => ['sort_algorithm' => 'alpha'],
-        'no_unused_imports' => true,
-        'not_operator_with_successor_space' => true,
-        'trailing_comma_in_multiline' => true,
-        'phpdoc_scalar' => true,
-        'unary_operator_spaces' => true,
-        'binary_operator_spaces' => true,
-        'blank_line_before_statement' => [
-            'statements' => ['break', 'continue', 'declare', 'return', 'throw', 'try'],
-        ],
-        'phpdoc_single_line_var_spacing' => true,
-        'phpdoc_var_without_name' => true,
-        'class_attributes_separation' => [
-            'elements' => [
-                'method' => 'one',
-            ],
-        ],
-        'method_argument_space' => [
-            'on_multiline' => 'ensure_fully_multiline',
-            'keep_multiple_spaces_after_comma' => true,
-        ],
-        'single_trait_insert_per_statement' => true,
-    ])
-    ->setFinder($finder);
diff --git a/README.md b/README.md
index b836b67..fe380ab 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,41 @@
-## Usage
+<img src="https://banners.beyondco.de/Laravel%20Postfinance%20B2B.png?theme=light&packageManager=composer+require&packageName=codebar-ag%2Flaravel-postfinance-b2b&pattern=circuitBoard&style=style_2&description=An+opinionated+way+to+integrate+postfinance-b2b+with+Laravel&md=1&showWatermark=0&fontSize=150px&images=document-download&widths=500&heights=500">
+
+[![Latest Version on Packagist](https://img.shields.io/packagist/v/codebar-ag/laravel-postfinance-b2b.svg?style=flat-square)](https://packagist.org/packages/codebar-ag/laravel-postfinance-b2b)
+[![GitHub-Tests](https://github.com/codebar-ag/laravel-postfinance-b2b/actions/workflows/run-tests.yml/badge.svg?branch=main)](https://github.com/codebar-ag/laravel-postfinance-b2b/actions/workflows/run-tests.yml)
+[![GitHub Code Style](https://github.com/codebar-ag/laravel-postfinance-b2b/actions/workflows/fix-php-code-style-issues.yml/badge.svg?branch=main)](https://github.com/codebar-ag/laravel-postfinance-b2b/actions/workflows/fix-php-code-style-issues.yml)
+[![Total Downloads](https://img.shields.io/packagist/dt/codebar-ag/laravel-postfinance-b2b.svg?style=flat-square)](https://packagist.org/packages/codebar-ag/laravel-postfinance-b2b)
+
+This package was developed to give you a quick start to communicate with the
+PostFinance B2B REST API.
+
+## 💡 What is PostFinance B2B?
+
+PostFinance B2B is a digital interface for all your invoices
+where you can send and receive your invoices electronically.
+
+## 🛠 Requirements
+
+| Package |     PHP     | Laravel | 
+|:-------:|:-----------:|:-------:|
+| v12.0.0 | ^8.2 - ^8.4 |  12.x   |
+| v11.0.0 | ^8.2 - ^8.3 |  11.x   |
+
+## ⚙️ Installation
+
+You can install the package via composer:
+
+```bash
+composer require codebar-ag/laravel-postfinance-b2b
+```
+
+Add the following environment variables to your `.env` file:
+
+```bash
+POSTFINANCE_B2B_USERNAME=
+POSTFINANCE_B2B_PASSWORD=
+```
+
+## 🏗 Usage
 
 Invoice download web services provided by PostFinance
 
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 87d8e08..e64d8ee 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -9,5 +9,4 @@ parameters:
     tmpDir: build/phpstan
     checkOctaneCompatibility: true
     checkModelProperties: true
-    checkMissingIterableValueType: false
-
+    noEnvCallsOutsideOfConfig: false
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 0b590da..5a32f80 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,7 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd" backupGlobals="false" bootstrap="vendor/autoload.php" colors="true" processIsolation="false" stopOnFailure="false" executionOrder="random" failOnWarning="true" failOnRisky="true" failOnEmptyTestSuite="true" beStrictAboutOutputDuringTests="true" cacheDirectory=".phpunit.cache" backupStaticProperties="false">
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.3/phpunit.xsd" backupGlobals="false"
+         bootstrap="vendor/autoload.php" colors="true" processIsolation="false" stopOnFailure="false"
+         executionOrder="random" failOnWarning="true" failOnRisky="true" failOnEmptyTestSuite="true"
+         beStrictAboutOutputDuringTests="true" cacheDirectory=".phpunit.cache" backupStaticProperties="false">
     <testsuites>
-        <testsuite name="CodebarAg Test Suite">
+        <testsuite name="codebar Solutions AG Test Suite">
             <directory>tests</directory>
         </testsuite>
     </testsuites>
@@ -16,6 +20,7 @@
         <junit outputFile="build/report.junit.xml"/>
     </logging>
     <php>
+        <env name="APP_KEY" value="base64:F+mHMDBbavrsp/I3WYA5lDSwDJJI/0wQG4eM3csq/lo="/>
         <env name="POSTFINANCE_B2B_WSDL" value="0"/>
         <env name="POSTFINANCE_B2B_USERNAME" value="username"/>
         <env name="POSTFINANCE_B2B_PASSWORD" value="password"/>