Added class properties jsdoc.

lib/models/email.js

@@ -14,16 +14,12 @@ var properties = {
 };
 
 /**
- * The Email Model.
+ * @property {String} to Email addressee.  Required.
+ * @property {String} from Email sender address.  Required.
+ * @property {String} subject Email subject string.  Required.
+ * @property {String} text Text body of email.  
+ * @property {String} html HTML body of email.
  * 
- * **Properties**
- * 
- * - `to` - String (required)
- * - `from` - String (required)
- * - `subject` - String (required)
- * - `text` - String
- * - `html` - String
- *
  * @class
  * @inherits {Model}
  */
@@ -58,4 +54,4 @@ var Email = module.exports = Model.extend('Email', properties);
 
 Email.prototype.send = function() {
   throw new Error('You must connect the Email Model to a Mail connector');
-}
+}