Update restful-CORS-filter.go
Update restful-CORS-filter.go

I needed this in order to have ajax calls work in chrome browser, without it you would get this error in trace logs:
 cors_filter.go:98: Http header Access-Control-Request-Headers:accept, content-type is not in [Content-Type]
clsung/go-restful,gaowenbin/go-restful,tabuyashir/go-restful,vinayakhulawale/go-restful,vinayakhulawale/go-restful,mtojek/go-restful,brendandburns/go-restful,emicklei/go-restful,wuub/go-restful,wuub/go-restful,grupawp/go-restful,tabuyashir/go-restful,clsung/go-restful,grupawp/go-restful,vikstrous/go-restful,gaowenbin/go-restful,brendandburns/go-restful,emicklei/go-restful,liggitt/go-restful,liggitt/go-restful,mtojek/go-restful,vikstrous/go-restful