GNU Terry Pratchett Headers

From discussion on both of these two threads. This module creates a simple X-Clacks-Overhead header with contents 'GNU Terry Pratchett' for Drupal sites.

In Pratchett’s “Going Postal”, workers who die in the line of duty have their names transmitted up and down the Discworld’s telegraph system as a tribute.

Usage

• Download the module using your preferred method and place in your sites/all/modules folder.
• Enable the module.

Tests
This module includes tests to ensure no regressions stop the headers from being sent.

Contribution
I'm happy to accept patches to the module.