make allowance for multiple selects
add field helper to go along with Aura.Input form fields
Fix the typo and add the missed docs
Merge pull request #25 from harikt/doctype

Fix the typo and add the missed docs
honor 'label' on fields
merge
fixed issues raised by automatic escaping.
use Traversable check, and remove debug code
make checkbox field a special case, use options for value and label
merge from develop