Merge pull request #28 from bperin/master

Found the overwriting error, fixes #27
Fixed bug with throwing warden.validation.password.too_short exception
Added missing )
Merge pull request #32 from PrimozRome/master

Fix for issue #31
fixes #29
No more HISTORY.md

This was getting redundant. Please view commits from now on.
Bump version, 2.0.1
Update lang/en/warden.php
Merge pull request #34 from daidais/patch-1

Update lang/en/warden.php
Allow inheritance of Driver class

Need to change $_session from private to protected to allow inheritance if we need to rewrite this class.
Changed $_session to $session

This is to reflect coding style for non-private members.
Merge pull request #36 from dre1080/patch-1

Allow inheritance of Driver class
Merge pull request #1 from dre1080/master

updating