Merge pull request objcoding#13 from wzxjohn/master

Add download fund flow function and bug fix

[fix] 修复http请求存在资源没有关闭导致泄漏问题

Merge pull request objcoding#11 from JuwanXu/master

修改微信支付在HMAC-SHA256算法下签名错误问题

更新 README

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Merge branch 'master' into gitee

账户字段私有