LearnBoost/mongoose — pull request #1732 by refack (2013-10-10 16:32:40+00:00)
Title: #1431

I refactored out the use of hooks to validate the model (and SubDocuments) into a promise, so this goes to help towards Issue #1446.
Only side effect of refactoring out the hooks is that now the "pre save validation" is a bit more thorough as reflected in the one changed test.