Add ruby-head and jruby-head to travis.yml.
Add ruby-head and jruby-head to travis.yml.

b1tw1se/sidetiq,stanchan/sidetiq,atpay/sidetiq,Altonymous/sidetiq,tobiassvn/sidetiq,danilogcarolino/sidetiq,grzlus/sidetiq,kickserv/sidetiq,slategroup/sidetiq,talentpad/sidetiq,danilogcarolino/sidetiq,slategroup/sidetiq,endofunky/sidetiq,sfroehler/sidetiq,kickserv/sidetiq,b1tw1se/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,vayu-technology/sidetiq,grzlus/sidetiq,endofunky/sidetiq,rjocoleman/sidetiq,flowerett/sidetiq,brennovich/sidetiq,talentpad/sidetiq,PaulMest/sidetiq,flowerett/sidetiq,atpay/sidetiq,akhiln/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,rjocoleman/sidetiq,PaulMest/sidetiq,stanchan/sidetiq,akhiln/sidetiq,vayu-technology/sidetiq,sfroehler/sidetiq,tobiassvn/sidetiq,brennovich/sidetiq