wget.getBuffer和wget.saveFile方法增加解压缩处理
wget.getBuffer和wget.saveFile方法增加解压缩处理

代码结构优化
1. wget请求的配置参数合并成opts Object

Feitianyuan/node-d2server,ls2uper/node-d2server,ls2uper/node-d2server,Bacra/node-d2server,Bacra/node-d2server,Feitianyuan/node-d2server