minor changes

lib/sequelize/model.js

@@ -13,6 +13,8 @@ var Model = module.exports = function(name, attributes, options) {
   this.name = name
   this.attributes = attributes
   this.options = options || {}
+  
+  this.associations = []
 }
 
 var classMethods = {
@@ -33,6 +35,7 @@ var instanceMethods = {
   }
 }
 
+/* Add the class and instance methods to Model */
 Utils._.map(classMethods, function(fct, name) { Model[name] = fct })
 Utils._.map(instanceMethods, function(fct, name) { Model.prototype[name] = fct})
 Utils._.map(Mixin.classMethods, function(fct, name) { Model[name] = fct })