add support for filtering on Schema.ObjectId
fix version
Merge pull request #23 from mauron85/master

add support for filtering on Schema.ObjectId
fixing regexp mixing chars with numbers
test and fixtures for issue #24
Merge pull request #25 from mauron85/master

Not handling strings with numbers correctly
Merge commit '541f2a02857597266c4dacb680ac547b3da3c787'

Conflicts:
	lib/mongoose-api-query.js
Updated Mongoose to 3.8.x
Added {null} operator