added version meta tag

cms/templates/default.tpl

@@ -6,6 +6,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta name="description" content="<?php if($description) echo $description; else echo $settings['default_description']; ?>" />
 <meta name="keywords" content="<?php if($keywords) echo $keywords; else echo $settings['default_keywords']; ?>" />
+<meta name="generator" content="phpSQLiteCMS <?php echo $settings['version']; ?>" />
 <link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet">
 <link href='http://fonts.googleapis.com/css?family=Patua+One' rel='stylesheet' type='text/css'>
 <link href="<?php echo STATIC_URL; ?>css/style.css" rel="stylesheet">