Added a vSPD module to make working with the results of the vSPD
results easier to work with.

Data loading is currently complete, building additional functionality
Added a vSPUD factory which yields vSPUD objects.

This factory is intended for iterating over a directory which contains a large
number of vSPD results. It will compile aggregated DataFrames of the data within
each sub directory which can then have the vSPUD methods applied to it
vSPUD doc string
Doc strings for the vSPUD factory class
Merge branch 'feature/vspd' into develop