Don't check issues on Ruby 1.8.6
Don't check issues on Ruby 1.8.6

The system certs are too old to be able to read from Github, so
don't try to use the Github API on 1.8.6 either.

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