nginx跨域配置

http://www.cnblogs.com/hawk-whu/p/6725699.html#undefined

http://blog.csdn.net/badboyer/article/details/51261083

http://www.cnblogs.com/chanAndy/p/6812695.html

https://stackoverflow.com/questions/13146892/cors-access-control-allow-headers-wildcard-being-ignored