用户管理缺少了新增标签的功能，只有一个移动用户到某个标签 #77
Description
def groups_members_batchtagging(self, to_groupid, *openid):
"""
批量打标签
:param to_groupid: 分组id
:param openid: 用户唯一标识符
"""
data = dict(openid_list=openid, tagid=to_groupid)
return self.post("/tags/members/batchtagging", data)