use `_.each` where `_.map` is useless

lib/dao-factory.js

@@ -153,7 +153,7 @@ module.exports = (function() {
     options = options || {}
     options = options || {}
     instance.__factory = this
     instance.__factory = this
 
 
-    Utils._.map(this.attributes, function(definition, name) {
+    Utils._.each(this.attributes, function(definition, name) {
       //transform integer 0,1 into boolean
       //transform integer 0,1 into boolean
       if(definition.indexOf(DataTypes.BOOLEAN) !== -1 && typeof instance[name] === "number") {
       if(definition.indexOf(DataTypes.BOOLEAN) !== -1 && typeof instance[name] === "number") {
         instance[name] = (instance[name] === 0) ? false : true;
         instance[name] = (instance[name] === 0) ? false : true;