README should have beter explanation as to what TIGER/Line files are needed

[semprebon]

In trying to download a minimal set of files from http://www.census.gov/geo/www/tiger/ (for testing purposes) it isn't really clear what files need to be downloaded. For example, the directory structure seems to change in different years (a slight modification to tiger_import got it working for 2008 files, but I don't know what it was originally written for)

[tyrauber]

I could be wrong - as I am having other difficulties getting the install process working on OS X, so I cannot yet confirm - but I believe you only need the following folders: EDGES, FEATNAMES, ADDR, ADDRFN

Which can be downloaded as Guest here: ftp://ftp2.census.gov/geo/tiger/TIGER2010/

Perhaps someone else can confirm.