Changed Db\RecordExists and Db\NoRecordExists declaration
Fixed class declaration typos
Changed validators FQCN to aliases
Merge pull request #113 from jguittard/master

Enabling adapter literal definition in Db Validators
[#113] Duplicated validators

- Since the new validators do not overwrite the originals, we should
  have configuration available for both. I've re-added the original
  Db\(No)?RecordExists configuration, stripping the "adapter" config key
  from each.
[#113] CS fixes

- indentation
Merge branch 'hotfix/113'

Close #113