Added the default cache configuration.

src/IDF/conf/idf.php-dist

@@ -106,6 +106,11 @@ $cfg['bounce_email'] = 'no-reply@example.com';
 // It is mandatory if you are using the template system.
 $cfg['tmp_folder'] = '/tmp';
 
+// Caching of the scm commands.
+$cfg['cache_engine'] = 'Pluf_Cache_File';
+$cfg['cache_timeout'] = 300;
+$cfg['cache_file_folder'] = $cfg['tmp_folder'].'/cache';
+
 // The folder in which the templates of the application are located.
 $cfg['template_folders'] = array(
                                  dirname(__FILE__).'/../templates',