added todo note for moving couchdb interaction out of the unitofwork and into the persister
added todo note for moving couchdb interaction out of the unitofwork and into the persister

kevinyien/couchdb-odm,kevinyien/couchdb-odm,Ocramius/couchdb-odm,d70rr3s/couchdb-odm,Ocramius/couchdb-odm,marnusw/couchdb-odm,doctrine/couchdb-odm,simplethings/couchdb-odm,d70rr3s/couchdb-odm,simplethings/couchdb-odm,doctrine/couchdb-odm,marnusw/couchdb-odm