form row deals with errors and custom classes
change API. use object on the form builder
introduce HtmlOptions class

cant use 'class' as reserved word
add form row to spec dummy docs
move html class from partial to class
FormRow is now dough namespaced
HtmlOptions is now a first class citizen
HtmlOptions can now do any attribute
better test description
fix deprecation warning
refactor. use implied false
provide a more useful comment
better spec dummy docs
add docs on how to use form_row with options
add docs for classes in html options
Merge pull request #120 from moneyadviceservice/form-row-helper-v2

Form row helper v2