Make Travis CI run build on JRuby 9000
Make Travis CI run build on JRuby 9000

apuratepp/reek,troessner/reek,apuratepp/reek,weby/reek,HParker/reek,skywinder/reek,skywinder/reek,skywinder/reek,andyw8/reek,tansaku/reek,weby/reek,apuratepp/reek,troessner/reek,andyw8/reek,andyw8/reek,HParker/reek,nTraum/reek,weby/reek,nTraum/reek,tansaku/reek,tansaku/reek,HParker/reek