Todo list:

 1. Make it so user can have different "header.html" files for each sorting
    option (set in config file)
 2. Allow users to write to files with names other than default "rank.html",
    "eff.html", "frags.html" and "deaths.html". This way user will also have
    a choice to create those files in sub-directory(ies). That can be changed
    via config file again.
