Check method existence rather than Ruby version
Check method existence rather than Ruby version

reelsense/brew,gregory-nisbet/brew,nandub/brew,claui/brew,amar-laksh/brew_sudo,mgrimes/brew,sjackman/homebrew,vitorgalvao/brew,gregory-nisbet/brew,aw1621107/brew,hanxue/linuxbrew,maxim-belkin/brew,EricFromCanada/brew,vitorgalvao/brew,hanxue/linuxbrew,hanxue/linuxbrew,ilovezfs/brew,reitermarkus/brew,reelsense/brew,jmsundar/brew,ilovezfs/brew,maxim-belkin/brew,DomT4/brew,MikeMcQuaid/brew,staticfloat/brew,EricFromCanada/brew,Linuxbrew/brew,staticfloat/brew,JCount/brew,mistydemeo/homebrew,Homebrew/brew,bfontaine/brew,mahori/brew,EricFromCanada/brew,Homebrew/brew,mistydemeo/homebrew,pseudocody/brew,rwhogg/brew,mahori/brew,gregory-nisbet/brew,Linuxbrew/brew,alyssais/brew,sjackman/homebrew,tonyg/homebrew,DomT4/brew,muellermartin/dist,nandub/brew,claui/brew,MikeMcQuaid/brew,claui/brew,tonyg/homebrew,AnastasiaSulyagina/brew,toonetown/homebrew,JCount/brew,konqui/brew,gordonmcshane/homebrew,nandub/brew,mgrimes/brew,toonetown/homebrew,muellermartin/dist,bfontaine/brew,claui/brew,MikeMcQuaid/brew,amar-laksh/brew_sudo,pseudocody/brew,tonyg/homebrew,reitermarkus/brew,gordonmcshane/homebrew,jmsundar/brew,vitorgalvao/brew,DomT4/brew,rwhogg/brew,konqui/brew,sjackman/homebrew,konqui/brew,Linuxbrew/brew,reelsense/brew,aw1621107/brew,Homebrew/brew,sjackman/homebrew,pseudocody/brew,amar-laksh/brew_sudo,maxim-belkin/brew,zmwangx/brew,bfontaine/brew,mgrimes/brew,zmwangx/brew,ilovezfs/brew,alyssais/brew,toonetown/homebrew,reitermarkus/brew,alyssais/brew,jmsundar/brew,aw1621107/brew,reitermarkus/brew,muellermartin/dist,rwhogg/brew,gordonmcshane/homebrew,mahori/brew,Homebrew/brew,AnastasiaSulyagina/brew,staticfloat/brew,Linuxbrew/brew,mistydemeo/homebrew,konqui/brew,zmwangx/brew,JCount/brew,DomT4/brew,palxex/brew,vitorgalvao/brew,AnastasiaSulyagina/brew,palxex/brew,JCount/brew,EricFromCanada/brew,nandub/brew,palxex/brew,mahori/brew,MikeMcQuaid/brew