Merge pull request #75 from joekain/commenters-typo

Fix typo commenters -> :commenters
Fix rails4 model_name compatibility issue
Restore spaces
Merge pull request #78 from awakia/master

Fix rails4 model_name compatibility issue
Properly handle error code 203: duplicate email

Handles response code 203 for duplicate email instead of raising a RuntimeException
Merge pull request #79 from EpicDraws/master

Properly handle duplicate email (error code 203)
Handle Arrays in get_attribute