Usage (via Makefile):

    $ make

Usage:

    $ ./mkpicindex.sh > index.html

This will create a justified gallery with all jpg, png and gif pictures
in the current directory.

    $ make clean

This will remove all autogenerated files except the generated thumbnail
files.

Configuration can be done by altering `mkpicindex.sh`. Configuration
variables are at the top.

You can create the files HEADER and FOOTER, which will be included
above and below the gallery.