Add Serialization function
Add Serialization function

Adding serialization functionality per https://docs.djangoproject.com/en/dev/howto/custom-model-fields/#converting-field-data-for-serialization
recklessromeo/django-money,recklessromeo/django-money,iXioN/django-money,AlexRiina/django-money,iXioN/django-money,tsouvarev/django-money,tsouvarev/django-money,rescale/django-money