Go Modules 下载代理服务，解决国内 Go 装包的痛。妈妈再也不用担心我因为装不上依赖库而不吃饭，使用步骤： ``` $ export GO111MODULE=on $ export GOPROXY=http://127.0.0.1:3000 $ git clone https://github.com/athens-artifacts/walkthrough.git $ cd walkthrough $ go run . go: downloading github.com/athens-artifacts/samplelib v1.0.0 The 🦁 says rawr! ```