Fixed how group is set with register()
Fixed how group is set with register() in the docs.
Removed parameters from users() as it no longer accepts parameters. Also, when using register() group should now be array instead of string.
now() replaced with time()
Merge pull request #132 from zwacky/patch-1

now() replaced with time()
Removed check_group_id CONSTRAINT as column does not exist
Fixed initial inserts for users and users_groups

 - By manually setting the id of the user in the INSERT query it
   results in the sequence not being incremented correctly. So have
   removed it from being manually set, since a new sequence will be
   created automatically starting at 1 the administrator will end up
   with an id of 1 anyway.
 - When inserting the users_groups the same senario applies where
   settings ids manually don't increment the sequence so the id being
   set manually for those inserts has also  been removed.
Merge pull request #139 from mtdavidson/2

Postgre SQL File Fixes
Merge pull request #130 from clarkgriswold/2

Fixed how group is set with register() in the docs.
Remove old code and require > CI2.0
Additional data could be optional in some circumstances
Made additional data and group name an empty array, same as model.
Merge pull request #143 from daparky/2

Couple of updates
Update models/ion_auth_model.php
Update models/ion_auth_model.php
Update libraries/Ion_auth.php
Added norwegian language file
changed the hook declaration and usage
Merge pull request #149 from axelay/2

changed the hook declaration and usage
Merge pull request #148 from Codemonkey1991/2

Added norwegian language file