Downloads - The Go Programming Language
https://golang.org/dl/

- windows下的开发环境
    - 下载go1.8.1.windows-amd64.msi安装
    - eclipse安装GoClipse，设置GOROOT为go安装路径
    - 将go安装目录下的bin目录加到PATH环境变量
    - go build
- centos6下的开发环境
    - wget https://storage.googleapis.com/golang/go1.8.1.linux-amd64.tar.gz
    - tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz
    - export PATH=$PATH:/usr/local/go/bin
    - mkdir $GOPATH/src/hello
    - go install hello

package main
import "fmt"

func main() {
    fmt.Printf("hello, world\n")
}