Added the missing css file from the header.
Config for custom header, footer, css. CSS included.

 - In the config file you can set variables for custome header, footer, and css file.
 - Current works for a custom CSS file.
Added the custom header capability.
Added 'custom' dir and updated gitignore.

gitignore will not consider files in the 'custom' directory except fot he README.md
Moved header and h1 to index.php added footer.
Removed errant em tag.