add piwik installation

www/analytics/plugins/LanguagesManager/Commands/PluginsWithTranslations.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+
+namespace Piwik\Plugins\LanguagesManager\Commands;
+
+use Piwik\Plugin\ConsoleCommand;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ */
+class PluginsWithTranslations extends ConsoleCommand
+{
+    protected function configure()
+    {
+        $this->setName('translations:plugins')
+             ->setDescription('Shows all plugins that have own translation files');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->writeln("Following plugins contain their own translation files:");
+
+        $pluginFiles = glob(sprintf('%s/plugins/*/lang/en.json', PIWIK_INCLUDE_PATH));
+        $pluginFiles = array_map(function($elem){
+            return str_replace(array(sprintf('%s/plugins/', PIWIK_INCLUDE_PATH), '/lang/en.json'), '', $elem);
+        }, $pluginFiles);
+
+        $output->writeln(join("\n", $pluginFiles));
+    }
+}