Retrofit 2.0 + OkHttp 3.0 配置

cookie的持久化：http://www.cnblogs.com/zhujiabin/p/6207913.html

cookie和session认识 ：http://blog.youkuaiyun.com/fangaoxin/article/details/6952954/

http://wuxiaolong.me/2016/06/18/retrofits/

缓存拦截器：http://blog.youkuaiyun.com/gengqiquan/article/details/52200638

http://gank.io/post/56e80c2c677659311bed9841

http://www.open-open.com/lib/view/open1456904039046.html

http://www.jianshu.com/p/bbb3b13e086e