Sea.js入门
学习了：
https://www.cnblogs.com/doseoer/p/4007752.html
https://blog.csdn.net/love_is_all_in_life/article/details/50354367
https://www.jianshu.com/p/ebdf2233e3fe
#930问题：https://github.com/seajs/seajs/issues/930
原文：https://www.cnblogs.com/stono/p/9021686.html