added updateUserRoles and admin/updateUserRoles

Batch assign roles with Username and Role from input CSV
updated README.md with updateUserRoles
CSV processing update.

Enforce quotes around string fields for cleaner CSV.  Fixed regression
bug with title field in header row.
a few minor changes

modified command line arg check for true/True/TRUE, changed header to
size_kb, accounted for double-quotes inside of strings (by double-double
quoting).
Merge pull request #3 from tschwartzman/master

a few minor changes
Revert "a few minor changes"

This reverts commit f721f1bf9ab92c4402728147a02c33fb181e5533.
fixed command line arg size, to deal with missing arg

fixed command line arg size, to deal with missing arg
fixed conflict
removed empty line
ensure quotes
Merge pull request #32 from sam-berg/master

updateUserRoles and CSV Processing update.