thomasgriffin/TGM-Plugin-Activation — pull request #164 by laras126 (2014-01-26 17:04:00+00:00)
Title: change add_submenu_page to add_theme_page

According to the Theme Check plugin, you are required to use add_theme_page for adding admin pages rather than add_submenu_page. Tested and seems to works fine - great work, thanks!