Make Go 1.0 happy
Make Go 1.0 happy

ant0ine/go-json-rest,jacobxk/go-json-rest,thomasf/go-json-rest,snowsnail/go-json-rest,observadorpt/go-json-rest,wingyplus/go-json-rest,llaraujo/go-json-rest,zhengcongzhen/go-json-rest,hhy5861/go-json-rest,syrohei/go-json-rest,thetooth/go-json-rest,TuneLab/go-json-rest,hiteshjoshi/go-json-rest,beni55/go-json-rest,AnuchitPrasertsang/go-json-rest,unravelin/go-json-rest