Changes to haddock

Changes to haddock:
commit 1e21c673a42d3337e05607ed4f47024c65d0cc9d
Author: Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk>
Date:   Sun Feb 9 17:51:22 2014 +0000

    Document module header.

    Fixes Haddock Trac #270.