Updates travis. Only compile for Go1.3
Updates travis. Only compile for Go1.3

go-go/gin,weisd/gin,jithinjk/gin,calavera/gin,weisd/gin,sdvdxl/gin,adwinsky/gin,aiyi/gin,helight/helight_code,hayd/gin,helight/helight_code,sanathb/gin,jacobxk/gin,abduld/gin,AnuchitPrasertsang/gin,AnuchitPrasertsang/gin,agaurav/gin,helight/helight_code,agaurav/gin,abduld/gin,thinkerou/gin,jacobxk/gin,cch123/gin,dayed/gin,sosedoff/gin,JustinBeckwith/gin,michelangelo13/gin,cention-mujibur-rahman/gin,nubunto/gin,sanathb/gin,CodyGuo/gin,tvmaly/gin,michelangelo13/gin,gamescores/gin,snyh/gin,cention-mujibur-rahman/gin,adwinsky/gin,fc-thrisp-hurrata-dlm-graveyard/flotilla-defunct,RomanMinkin/gin,marcelaraujo/gin,helight/helight_code,jjz/gin,JustinBeckwith/gin,JustinBeckwith/gin,michelangelo13/gin,helight/helight_code,helight/helight_code,bfosberry/gin,weisd/gin,hayd/gin,adwinsky/gin,jithinjk/gin,disintegrator/gin,jacobxk/gin,gin-gonic/gin,abduld/gin,marcelaraujo/gin,hayd/gin,0prototype/gin,jimmykuo/gin,helight/helight_code,gaowenbin/gin,thrisp/flotilla,helight/helight_code,bfosberry/gin,cention-mujibur-rahman/gin,henrylee2cn/gin,thrisp/flotilla,marcelaraujo/gin,helight/helight_code,VishvajitP/gin,agaurav/gin,sanathb/gin,b54898533/gin