https://github.com/google/protobuf/releases/ 页面下载编译工具
http://www.cnblogs.com/ghj1976/p/5435565.html
http://blog.csdn.net/majianfei1023/article/details/45371743
protobuf
原文：http://www.cnblogs.com/wikiki/p/6912344.html
