Fix typeof incorrectness

It should either be:
if(ko === undefined) ...
or
if(typeof(ko) === 'undefined')

but currently that line will never hit the throw statement.
Merge branch 'master' of https://github.com/JeffreyBrownEnlighten/Knockout-Validation

Pull-Request: https://github.com/Knockout-Contrib/Knockout-Validation/pull/447
Original-Message: Fix typeof incorrectness
Merge branch 'master' of https://github.com/dotnetwise/Knockout-Validation

Pull-Request: https://github.com/Knockout-Contrib/Knockout-Validation/pull/411
Original-Message: Added romanian Localization/ro-RO.js