https://golang.org/dl/
https://chai2010.cn/advanced-go-programming-book/ch3-asm/ch3-01-basic.html
https://github.com/bingohuang/effective-go-zh-en
go get -u -v github.com/kardianos/govendor
mkdir -p $GOPATH/src/golang.org/x/
cd $GOPATH/src/golang.org/x/
git clone https://github.com/golang/tools.git
go install golang.org/x/tools/cmd/goimports