TITLE - the title of the gallery
WIDTH - the width to make the icons
BPGALLERY_THEME - set the theme to use (described below)
+ BPGALLERY_THEME_DIR - set an extra location to look for themes
+ OUTPUTHTML - sets the script output to be wrapped in a <pre> block
Example Usage:
TITLE="My Funky Gallery" bpgallery.sh /path/to/image/files