Add Travis support for Ruby 2.1.1
Add Travis support for Ruby 2.1.1

Add Travis support for Ruby 2.1.1
b1tw1se/sidetiq,Altonymous/sidetiq,flowerett/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,flowerett/sidetiq,sfroehler/sidetiq,tomoyuki-yanagisawa/sidetiq-mod,kickserv/sidetiq,talentpad/sidetiq,atpay/sidetiq,talentpad/sidetiq,kickserv/sidetiq,brennovich/sidetiq,slategroup/sidetiq,stanchan/sidetiq,tobiassvn/sidetiq,slategroup/sidetiq,PaulMest/sidetiq,brennovich/sidetiq,vayu-technology/sidetiq,grzlus/sidetiq,akhiln/sidetiq,atpay/sidetiq,danilogcarolino/sidetiq,rjocoleman/sidetiq,stanchan/sidetiq,endofunky/sidetiq,rjocoleman/sidetiq,PaulMest/sidetiq,danilogcarolino/sidetiq,akhiln/sidetiq,vayu-technology/sidetiq,endofunky/sidetiq,sfroehler/sidetiq,grzlus/sidetiq,tobiassvn/sidetiq,b1tw1se/sidetiq