Remove include.daoFactory

lib/model.js

@@ -1727,7 +1727,9 @@ module.exports = (function() {
       } else if (typeof include !== 'object') {
         throw new Error('Include unexpected. Element has to be either a Model, an Association or an object.');
       } else if (include.hasOwnProperty('daoFactory')) {
+        // convert daoFactory to model (for backwards compatibility)
         include.model = include.daoFactory;
+        delete include.daoFactory;
       }
 
       return include;