Add golang to travis config
Add golang to travis config

vanloswang/tchannel,sasa233/tchannel,chenwenbin928/tchannel,RyanTech/tchannel,benfleis/tchannel,Zirpon/tchannel,bunnyblue/tchannel,savaki/tchannel,bunnyblue/tchannel,hustxiaoc/tchannel,Zirpon/tchannel,chenwenbin928/tchannel,benfleis/tchannel,i/tchannel,i/tchannel,chenwenbin928/tchannel,bunnyblue/tchannel,vanloswang/tchannel,vanloswang/tchannel,savaki/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,Zirpon/tchannel,i/tchannel,hustxiaoc/tchannel,sasa233/tchannel,RyanTech/tchannel,savaki/tchannel,benfleis/tchannel,sasa233/tchannel