upgrade travis to jruby-1.7.9
upgrade travis to jruby-1.7.9

fedenusy/warbler,idibon/warbler,idibon/warbler,fedenusy/warbler,fedenusy/warbler,ctreatma/warbler,idibon/warbler,ctreatma/warbler,fedenusy/warbler,ctreatma/warbler,ctreatma/warbler,idibon/warbler