Update travis config
Update travis config

Check against Go 1.2 and 1.3

VividCortex/mysql,wfxiang08/mysql,bookerzzz/mysql,yonglehou/mysql,rafaeljusto/mysql,segmentio/mysql,Frca/mysql,helight/helight_code,helight/helight_code,helight/helight_code,eklitzke/mysql,jockchou/mysql,sunjian1/mysql,helight/helight_code,helight/helight_code,hebihui/mysql,Go-SQL-Driver/MySQL,siriele/mysql,springning/mysql,helight/helight_code,aperera/mysql,Freeaqingme/golang-sql-driver-mysql,LightKool/mysql-go,helight/helight_code,bookerzzz/mysql,henrylee2cn/mysql,rlowe/mysql,hyperworks/mysql,helight/helight_code,cw2018/mysql,methane/mysql,LightKool/mysql-go,yyljlyy/mysql,helight/helight_code,cxflag203/mysql,netroby/mysql,tmulchay/mysql,segmentio/mysql,VividCortex/mysql,zhgo/mysql,Vorstack/mysql,chinanjjohn2012/mysql,roth1002/mysql,joshuaprunier/mysql,muthusubbu459/mysql,methane/mysql,go-sql-driver/mysql,nanata1115/mysql