Provide README

Author: e1himself

README.md

@@ -1,2 +1,48 @@
-# array-container
-Plain-simple array container implementation for PSR-11
+![Status](https://github.com/technically-php/array-container/actions/workflows/test.yml/badge.svg)
+
+# ArrayContainer
+
+`ArrayContainer` is a plain-simple [PSR-11](https://www.php-fig.org/psr/psr-11/) container implementation 
+powered by a simple associative array under the hood.
+
+## Features
+
+- PSR-11
+- PHP 7.1+
+- PHP 8.0
+- Semver
+- Tests
+
+## Installation
+
+Use [Composer](https://getcomposer.org/) package manager to add *ArrayContainer* to your project:
+
+```
+composer require technically/array-container
+```
+
+## Example
+
+```php
+<?php
+
+use Technically\ArrayContainer\ArrayContainer;
+
+// ... instantiate your services: $logger, $cache, $config
+
+// Instantiate with predefined entries
+$container = new ArrayContainer([
+ 'logger' => $logger,
+ 'cache' => $cache,
+]);
+
+// Add more entries later
+$container->set('config', $config);
+
+// Get entries from it later in your code
+$logger = $container->get('logger');
+```
+
+## Credits
+
+- Implemented by [Ivan Voskoboinyk](https://github.com/e1himself)