Implement Unit Tests, add Readme, add examples, stronger implementation

src/Tests/Tools/PropertyInspector.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Toalett\Multiprocessing\Tests\Tools;
+
+use ReflectionObject;
+
+trait PropertyInspector
+{
+	protected function getProperty(object $object, string $propertyName)
+	{
+		$reflector = new ReflectionObject($object);
+		$property = $reflector->getProperty($propertyName);
+		$property->setAccessible(true);
+		return $property->getValue($object);
+	}
+}