Merge pull request #3945 from sunshinewyin/master

Fix spelling error in model.js

lib/model.js

@@ -13,7 +13,7 @@ var Utils = require('./utils')
   , associationsMixin = require('./associations/mixin');
 
 /**
- * A Model represents a table in the database. Sometimes you might also see it refererred to as model, or simply as factory.
+ * A Model represents a table in the database. Sometimes you might also see it referred to as model, or simply as factory.
  * This class should _not_ be instantiated directly, it is created using `sequelize.define`, and already created models can be loaded using `sequelize.import`
  *
  * @class Model