Document user class properties

lib/models/user.js

@@ -116,6 +116,12 @@ var options = {
  * - ALLOW EVERYONE `findById`
  * - ALLOW OWNER `updateAttributes`
  *
+ * @property {String} username Must be unique
+ * @property {String} password Hidden from remote clients
+ * @property {String} email Must be valid email
+ * @property {Boolean} emailVerified Set when a user's email has been verified via `confirm()`
+ * @property {String} verificationToken Set when `verify()` is called
+ *
  * @class
  * @inherits {Model}
  */