I am tring to rename the Twenty Eleven Theme to Melissa.
I have followed the instructions here: http://www.davidjrush.com/blog/2012/09/renaming-your-wordpress-theme/ and have
renamed the files as follows:
* @package WordPress
* @subpackage Melissa
* @since Melissa 1.0
and still when I log in to the Admin Panel I see the Twenty Eleven Theme.
What did I forget to do?
The instructions you are looking for are under #2 in the article you linked to.
You need to edit the style.css file that's in the theme's folder.
At the top for the style.css file, you'll see "Theme Name" and "version". Change the values of the text after the colon for each one.