Add brackets, update README, refactored naming

lib/functions.php

@@ -0,0 +1,40 @@
+<?php
+use JoopSchilder\Asynchronous\Asynchronous;
+use JoopSchilder\Asynchronous\Promise;
+
+if (!function_exists('async')) {
+
+	/**
+	 * @param callable $function
+	 * @param mixed ...$parameters
+	 * @return Promise
+	 */
+	function async(callable $function, ...$parameters)
+	{
+		return Asynchronous::run($function, ...$parameters);
+	}
+}
+
+
+if (!function_exists('async_cleanup')) {
+
+	/**
+	 *
+	 */
+	function async_cleanup()
+	{
+		Asynchronous::cleanup();
+	}
+}
+
+
+if (!function_exists('async_wait_all')) {
+
+	/**
+	 *
+	 */
+	function async_wait_all()
+	{
+		Asynchronous::waitForChildren();
+	}
+}