Get community group buying setting information

```javascript WXAPI.communitySetting() ``` ```json { "code": 0, "data": { "deadline": "22:00", "id": 2, "leaderNeedPay": true, "price": 12 }, "msg": "success" } ``` + Does leaderNeedPay support purchasing leader? + deadline deadline: 22:00 + price the purchase price of the group leader