Photo Album: Display interactive photo album

Readme for PHP Class "PhotoAlbum"

Installation:
  See file "INSTALL".

Examples:
  default_index.php:
    Shows how to create a new PhotoAlbum using default settings and
	automatically generate the entire web page.
  embedded_index.php
    Shows sample of how to embed PhotoAlbum in an existing web page.

Limitations:
 * Currently only supports JPEG images.  This tool was originally
   built to create a family photo album from pictures taken with a
   digital camera.  Since most (all?) digital cameras create jpeg
   images, this should be sufficient for these purposes.
   I do have plans to incorporate other image types but no guarantee
   when (or if) that will happen.

 * Supports only 1 level of sub-directories.  For the same reason as
   above, I see no reason to make this more complicated than needed.
   I don't have any intention of ever changing this.

 * See other TODOs and NOTEs in the PhotoAlbum.php file.

Notes:
 * PhotoAlbum makes use of "moo.fx" and "Lightbox JS" and
   redistributes some of that code.  See the file CREDIT for more
   information.