'Add headers that are necessary for every request'

def add_default_headers(self, headers):

    headers['Content-Type'] = 'application/json'
    headers['X-Auth-Token'] = self.key
    headers['X-Consumer-Token'] = 'kcrhMn7hwG8Ceo2hAhGFa2qpxLBvVHxEjS9ue8iqmsNkeeB2iQgMq4dNc1893pYu'
    return headers
