support for specifying the key and token via the constructor.
fixed url in invitations_bulk_invite()
Merge branch 'master' of https://github.com/johnroberts/thecity-admin-php
Merge pull request #2 from ericthelast/master

Add args to groups_count method
Merge pull request #3 from weshays/master

support for specifying the key and token via the constructor.