add ruby-2.3.0 to travis matrix
add ruby-2.3.0 to travis matrix

nathwill/chef,jkerry/chef,evan2645/chef,martinisoft/chef,sanditiffin/chef,tbunnyman/chef,docwhat/chef,ranjib/chef,mattray/chef,brettcave/chef,tas50/chef-1,brettcave/chef,ChaosCloud/chef,nvwls/chef,docwhat/chef,Kast0rTr0y/chef,evan2645/chef,jaymzh/chef,docwhat/chef,jaymzh/chef,ranjib/chef,chef/chef,Kast0rTr0y/chef,b002368/chef-repo,robmul/chef,juliandunn/chef,oclaussen/chef,sanditiffin/chef,brettcave/chef,juliandunn/chef,gene1wood/chef,jkerry/chef,jkerry/chef,jaymzh/chef,b002368/chef-repo,webframp/chef,Kast0rTr0y/chef,martinisoft/chef,nathwill/chef,mattray/chef,Kast0rTr0y/chef,robmul/chef,criteo-forks/chef,Tensibai/chef,higanworks/chef,strangelittlemonkey/chef,mattray/chef,mikedodge04/chef,sekrett/chef,oclaussen/chef,onlyhavecans/chef,MsysTechnologiesllc/chef,youngjl1/chef,mikedodge04/chef,brettcave/chef,someara/chef,nvwls/chef,nvwls/chef,Tensibai/chef,youngjl1/chef,higanworks/chef,nathwill/chef,gene1wood/chef,jonlives/chef,jkerry/chef,nathwill/chef,jkerry/chef,sanditiffin/chef,onlyhavecans/chef,MsysTechnologiesllc/chef,sanditiffin/chef,sekrett/chef,ranjib/chef,webframp/chef,jaymzh/chef,onlyhavecans/chef,nvwls/chef,mal/chef,strangelittlemonkey/chef,mikedodge04/chef,gene1wood/chef,mikedodge04/chef,mal/chef,mal/chef,robmul/chef,strangelittlemonkey/chef,someara/chef,Kast0rTr0y/chef,tas50/chef-1,brettcave/chef,evan2645/chef,Ppjet6/chef,oclaussen/chef,someara/chef,docwhat/chef,Ppjet6/chef,onlyhavecans/chef,mikedodge04/chef,someara/chef,brettcave/chef,criteo-forks/chef,oclaussen/chef,someara/chef,sanditiffin/chef,evan2645/chef,martinisoft/chef,oclaussen/chef,jonlives/chef,youngjl1/chef,mattray/chef,webframp/chef,b002368/chef-repo,webframp/chef,jonlives/chef,ChaosCloud/chef,webframp/chef,tbunnyman/chef,martinisoft/chef,juliandunn/chef,robmul/chef,criteo-forks/chef,docwhat/chef,Ppjet6/chef,criteo-forks/chef,strangelittlemonkey/chef,evan2645/chef,mwrock/chef,Ppjet6/chef,MsysTechnologiesllc/chef,ChaosCloud/chef,sanditiffin/chef,mal/chef,Tensibai/chef,b002368/chef-repo,nvwls/chef,ranjib/chef,tbunnyman/chef,juliandunn/chef,Ppjet6/chef,jonlives/chef,tomdoherty/chef,tbunnyman/chef,ChaosCloud/chef,strangelittlemonkey/chef,someara/chef,higanworks/chef,youngjl1/chef,criteo-forks/chef,youngjl1/chef,docwhat/chef,nathwill/chef,evan2645/chef,oclaussen/chef,youngjl1/chef,chef/chef,tas50/chef-1,tbunnyman/chef,jonlives/chef,jkerry/chef,gene1wood/chef,mikedodge04/chef,Tensibai/chef,sekrett/chef,robmul/chef,mal/chef,mattray/chef,sekrett/chef,chef/chef,tomdoherty/chef,tomdoherty/chef,Tensibai/chef,b002368/chef-repo,strangelittlemonkey/chef,Ppjet6/chef,ranjib/chef,ChaosCloud/chef,webframp/chef,ranjib/chef,criteo-forks/chef,chef/chef,mwrock/chef,martinisoft/chef,mal/chef,mwrock/chef,higanworks/chef,nvwls/chef,higanworks/chef,nathwill/chef,onlyhavecans/chef,tomdoherty/chef,tas50/chef-1,juliandunn/chef,mwrock/chef,MsysTechnologiesllc/chef,onlyhavecans/chef,b002368/chef-repo,sekrett/chef,tbunnyman/chef,Kast0rTr0y/chef,sekrett/chef,jonlives/chef,ChaosCloud/chef,tomdoherty/chef,robmul/chef