Start working on API documentation and token auth (references #5)

controllers/OpenApiController.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Grocy\Controllers;
+
+use \Grocy\Services\ApplicationService;
+
+class OpenApiController extends BaseApiController
+{
+	public function DocumentationUi(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args)
+	{
+		return $this->AppContainer->view->render($response, 'apidoc');
+	}
+
+	public function DocumentationSpec(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args)
+	{
+		$applicationService = new ApplicationService();
+
+		$specJson = json_decode(file_get_contents(__DIR__ . '/../helpers/grocy.openapi.json'));
+		$specJson->info->version = $applicationService->GetInstalledVersion();
+
+		return $this->ApiResponse($specJson);
+	}
+}