Add missing Config import statement for #33

convenience.js

@@ -21,12 +21,12 @@
  * Some code was also adapted from the upstream Gnome Shell source code.
  */
 
+const Config = imports.misc.config;
 const ExtensionUtils = imports.misc.extensionUtils;
 const Gettext = imports.gettext;
 const Gio = imports.gi.Gio;
 const Lang = imports.lang;
 
-
 /**
  * initTranslations:
  * @domain: (optional): the gettext domain to use