Added back codestyle checks via Drone

.drone.yml

@@ -0,0 +1,8 @@
+pipeline:
+  phpcs:
+    image: composer:latest
+    commands:
+      - echo $(date)
+      - composer install --prefer-dist --no-progress --no-interaction
+      - vendor/bin/robo check:codestyle
+      - echo $(date)

RoboFile.php

@@ -1,33 +1,47 @@
 <?php
-
 /**
  * This is project's console commands configuration for Robo task runner.
  *
- * @see http://robo.li/
+ * Download robo.phar from http://robo.li/robo.phar and type in the root of the repo: $ php robo.phar
+ * Or do: $ composer update, and afterwards you will be able to execute robo like $ php vendor/bin/robo
+ *
+ * @package    JoomlaBrowser
+ *
+ * @copyright  Copyright (C) 2005 - 2018 Open Source Matters, Inc. All rights reserved.
+ * @license    GNU General Public License version 2 or later; see LICENSE.txt
+ * @see        http://robo.li/
+ *
+ * @since      1.0.0
  */
+
 class RoboFile extends \Robo\Tasks
 {
 	// Load tasks from composer, see composer.json
-	use Joomla\Testing\Robo\Tasks\loadTasks;
+	use Joomla\Testing\Robo\Tasks\LoadTasks;
 
 	/**
 	 * Check the code style of the project against a passed sniffers using PHP_CodeSniffer_CLI
 	 *
 	 * @param   string $sniffersPath Path to the sniffers. If not provided Joomla Coding Standards will be used.
+	 * @return  void
 	 */
 	public function checkCodestyle($sniffersPath = null)
 	{
 		if (is_null($sniffersPath))
 		{
-			$sniffersPath = __DIR__ . '/.travis/phpcs/Joomla';
+			$sniffersPath = __DIR__ . '/.tmp/coding-standards';
 		}
 
 		$this->taskCodeChecks()
 			->setBaseRepositoryPath(__DIR__)
 			->setCodeStyleStandardsFolder($sniffersPath)
-			->setCodeStyleCheckFolders(['/src'])
+			->setCodeStyleCheckFolders(
+				array(
+					'src'
+				)
+			)
 			->checkCodeStyle()
 			->run()
 			->stopOnFail();
 	}
-}
+}

composer.json

@@ -16,14 +16,22 @@
     ],
     "require": {
         "php"                                   : ">=5.5.9",
-        "consolidation/robo"                    : "~1"
+        "consolidation/robo"                    : "^1",
+        "symfony/console"                       : "~3|~4",
+        "symfony/filesystem"                    : "~3|~4",
+        "symfony/finder"                        : "~3|~4",
+        "symfony/process"                       : "~3|~4",
+        "symfony/yaml"                          : "~3|~4"
     },
     "require-dev": {
-        "joomla-projects/joomla-testing-robo"   : "~1.0"
+        "joomla-projects/joomla-testing-robo"   : "dev-container-test",
+        "codeception/codeception"               : "~2.4"
     },
     "autoload": {
         "psr-4": {
             "Codeception\\Module\\"             : "src"
         }
-    }
+    },
+    "minimum-stability"                         : "dev",
+    "prefer-stable"                             : true
 }