Data Source Documentaiton

[kuriwaki]

It would be good to have documentation of the source of the NC and WA data. The way I know is to add a R/ directory and document in roxygen, even though this is not a R pacakge.

That would give the compilers credit, and analysts can then go and extend / cross-check it.

For example, I was wondering how easy it was to add Census / Voterfile race data to the NC shapefile.

[CoryMcCartan]

@christopherkenny what was the NC source?
I will add a citation for the WA source

[christopherkenny]

The NC data is from the North Carolina General Assembly.

[christopherkenny]

I think this is ready to close.

Addressed in e5ee77f and 2af9e56.