Small changes to these scripts due to new locations ...
Some minor improvements to README file to explain a little more purpose of
each script.
Adding a module which contains some know-how to do useful stuff with OD
results created from OpenTripPlanner (and another package we've been using at
BZE, NetView).

For example it can create a combined 'comparison table' from a subset of two
OD matrices, showing time difference along each route.

There is also a function in there to export to a shape file for GIS
visualisation.