Minor formatting tweaks and additional comments.
Minor formatting tweaks and additional comments.

cogniteev/mongoengine,MakerReduxCorp/mongoengine,larsbutler/mongoengine,DavidBord/mongoengine,touilleMan/mongoengine,ProgressivePlanning/mongoengine,Davidrjx/mongoengine,RussellLuo/mongoengine,cogniteev/mongoengine,MRigal/mongoengine,ConsumerPhysics/mongoengine,sourcelair/mongoengine,MongoEngine/mongoengine,Davidrjx/mongoengine,MakerReduxCorp/mongoengine