Merge pull request #76 from wpreul/master

0.2.6
node 0.10
Added setting for skipping value conversions
readme updated related to skipConversions
Merge pull request #77 from mikkolehtinen/master

Added setting for optionally skipping value conversions
Allowing objects to be undefined by default
Adding tests (breaking on purpose)
Allowing an object type to handle null or undefined values