BREAKING CHANGE - Mongodb native has updated to 2.0. That was a major version release which altered some returns from major functions (insert, update, remove, save notably). Mongolayer has been updated to respect those alterations.

insert - returns (err, docs, result)
remove - returns (err, result)
update - returns (err, result)
save - return (err, doc, result)

Documentation updated to reflect the change. Tests fixed.
Bumps to version .3.1