Readd the Theme Customizer functionality

I updated/added four files.

footer.php - I just added the echo to get whatever field we wanted.  The class name used in the wrapper is also used in the JS for the live reload thing.

functions.php - I just added the call to the file

customizer.php - I left the code in for the default ones (theme title/description).  I think they're handled differently than other options.  I removed all reference to the header color.  The action is made of 3 parts.  Creating a section, creating a setting, and binding the setting to the section.  A section can have multiple settings in it.

customizer.js - I just dropped this into the root of the JS stuff, not sure how you're doing scripting for one off things.  This just grabs the value that the user puts in the text field and live reloads it on the customize page.