fix instruments part of payload

lib/jam_ruby/models/user.rb

@@ -2,7 +2,7 @@ module JamRuby
   class User < ActiveRecord::Base
 
     attr_accessible :name, :email, :password, :password_confirmation
-    attr_accessor :updating_password, :online, :photo_url
+    attr_accessor :updating_password
 
     self.primary_key = 'id'
     

lib/jam_ruby/models/user_instrument.rb

@@ -6,5 +6,9 @@ module JamRuby
     belongs_to :user
     belongs_to :instrument
 
+    def description
+      @description = self.instrument.description
+    end
+
   end
 end