README: fix typos; markup code-like text appropriately
README: fix typos; markup code-like text appropriately

iXioN/django-money,tsouvarev/django-money,tsouvarev/django-money,recklessromeo/django-money,AlexRiina/django-money,iXioN/django-money,recklessromeo/django-money,rescale/django-money