参考博客：https://www.cnblogs.com/mstmdev/p/5454981.html
参考主动下载方法：https://blog.csdn.net/bing2011/article/details/81183569
个人心得：
国外翻墙无法连接下载时，用gopm下载方法
先安装gopm，gopm的安装网络不影响！
go get -v https://github.com/gpmgo/gopm
然后用gopm来下载其他应用
gopm get -g -v -u github.com/nsf/gocode
gopm get -g -v -u github.com/golang/lint/golint
gopm get -g -v -u github.com/lukehoban/go-outline
gopm get -g -v -u sourcegraph.com/sqs/goreturns
gopm get -g -v -u golang.org/x/tools/cmd/gorename
gopm get -g -v -u github.com/tpng/gopkgs
gopm get -g -v -u github.com/newhook/go-symbols
gopm get -g -v -u golang.org/x/tools/cmd/guru
gopm get -g -v -u golang.org/x/tools/cmd/goimports
gopm get -g -v -u github.com/rogpeppe/godef
下载完毕之后，进入gopath路径来逐步安装！
go install github.com/ramya-rao-a/go-outline
go install golang.org/x/tools/cmd/goimports
go install github.com/nsf/gocode
go install sourcegraph.com/sqs/goreturns
go install golang.org/x/tools/cmd/gorename
go install github.com/tpng/gopkgs
go install github.com/newhook/go-symbols
go install golang.org/x/tools/cmd/guru
go install github.com/rogpeppe/godef
go install github.com/golang/lint/golint
go install github.com/uudashr/gopkgs/cmd/gopkgs