nationalfield/users — pull request #1 by grahamc (2012-09-19 13:33:50+00:00)
Title: [COOK-1679] Create a flag to append users to group

Instead of simply replacing all the members of the group, this allows
for appending users to the group.

The original behavior was to remove any existing users.

NOTE: I've PR'd this to the main Opscode repo for this code, but they may or may not accept it, so merging it in here may be useful.

See: http://tickets.opscode.com/browse/COOK-1679
and: https://github.com/opscode-cookbooks/users/pull/12/files