Documentation for geolucidate

As promised, I have completed documentation for geolucidate, and uploaded it to PyPI (where it can be viewed here). Aside from documenting the API, the documentation also includes a discussion on the input formats which are accepted. This also merits a new source release, which has been uploaded to PyPI as version 0.2. There are no substantive changes other than documentation in version 0.2, but two test cases have been added (they passed when they were added, so no further source changes were required).