Merge pull request #17 from s-good/master

First version of an unpack routine for WOD ASCII data
Merge pull request #20 from s-good/master

Fix for patching of ddt and added ddt version requirement to readme
Merge pull request #23 from s-good/master

Repository reorganisation
Merge pull request #24 from s-good/master

A basic example of a quality control check
Example of running tests on real data