As outlined in #58 there are a number of problems with docs:
Summary
The callback of Dal.remove and Dal.update should be function( error, results ){ } instead of function( error, result ){ } and they will remove/update one or more documents if $query is an object . The documents need update.
The first parameter fnName of before/after filter function is not optional .
As outlined in #58 there are a number of problems with docs:
Summary