Added GOOS={linux,darwin,windows} to the Travis-CI build matrix
Added GOOS={linux,darwin,windows} to the Travis-CI build matrix

josephyzhou/dns,modulexcite/dns,letsencrypt/dns,cloudflare/dns,ErikDubbelboer/dns,Git-Host/dns,AlexCheong/dns,janstk/dns,skyportsystems/dns,tempbottle/dns,asergeyev/dns,flebarbe/dns,jdef/dns,ym/go-dns,curtiszimmerman/dns,benbearchen/dns,skynet/dns,michaelharo/dns,Psiphon-Inc/dns,bboreham/dns,ezoic/dns,hugozhu/dns,bragr/dns,tsenart/dns,miekg/dns,rolandshoemaker/dns,jmhodges/dns