counter plugin

I wrote a blosxom plugin, just a simple counter.

* counter: 1.1 2003/12/21 21:13:24 ichiki Exp

place "$counter::counter" where you want. you need to specify log and counter files, as well as the place of image files. here, i put images at "/images/digits/katt077_/[0-9]katt077_.gif".

Reference: logger plugin.