docs: def add_contact_to_group(self, contact, group):
          """Add contact to group
  
          :param contact: name or contact object
          :param group: name or group object
          :type contact: ``str``, ``unicode``, ``dict``
          :type group: ``str``, ``unicode``, ``dict``
          :rtype: ``bool``
          """
  
          if isinstance(contact, basestring):
              contact = self.get_contact(contact)
  
          if isinstance(group, basestring):
              group = self.get_group(group)
  
          method, url = get_URL('contacts_add_to_group')
  
          payload = {
              'apikey': self.config.get('apikey'),
              'logintoken': self.session.cookies.get('logintoken'),
              'contactid': contact['contactid'],
              'contactgroupid': group['contactgroupid']
              }
  
          res = getattr(self.session, method)(url, params=payload)
  
          if res.status_code == 200:
              return True
  
          hellraiser(res)