Merge pull request #2483 from overlookmotel/expose-sequelize.Sequelize

Sequelize.prototype.Sequelize

lib/sequelize.js

@@ -203,6 +203,13 @@ module.exports = (function() {
   Sequelize.options = {hooks: {}};
 
   /**
+   * A reference to Sequelize constructor from sequelize. Useful for accessing DataTypes, Errors etc.
+   * @property Sequelize
+   * @see {Sequelize}
+   */
+  Sequelize.prototype.Sequelize = Sequelize;
+
+  /**
    * A reference to sequelize utilities. Most users will not need to use these utils directly. However, you might want to use `Sequelize.Utils._`, which is a reference to the lodash library, if you don't already have it imported in your project.
    * @property Utils
    * @see {Utils}