mirror: add command to mirror to Bintray. (#263)
mirror: add command to mirror to Bintray. (#263)

Used for uploading imagemagick 6.9.4-3.
toonetown/homebrew,palxex/brew,rwhogg/brew,toonetown/homebrew,sjackman/homebrew,EricFromCanada/brew,ilovezfs/brew,palxex/brew,vitorgalvao/brew,hanxue/linuxbrew,mahori/brew,pseudocody/brew,hanxue/linuxbrew,sjackman/homebrew,sjackman/homebrew,maxim-belkin/brew,mgrimes/brew,MikeMcQuaid/brew,Linuxbrew/brew,mgrimes/brew,Linuxbrew/brew,maxim-belkin/brew,bfontaine/brew,zmwangx/brew,maxim-belkin/brew,nandub/brew,tonyg/homebrew,JCount/brew,bfontaine/brew,DomT4/brew,muellermartin/dist,mahori/brew,gregory-nisbet/brew,claui/brew,reitermarkus/brew,alyssais/brew,EricFromCanada/brew,gordonmcshane/homebrew,DomT4/brew,reelsense/brew,bfontaine/brew,ilovezfs/brew,JCount/brew,konqui/brew,jmsundar/brew,reelsense/brew,muellermartin/dist,alyssais/brew,mgrimes/brew,gordonmcshane/homebrew,Homebrew/brew,claui/brew,DomT4/brew,reelsense/brew,mahori/brew,toonetown/homebrew,Homebrew/brew,EricFromCanada/brew,alyssais/brew,palxex/brew,reitermarkus/brew,EricFromCanada/brew,MikeMcQuaid/brew,Linuxbrew/brew,nandub/brew,jmsundar/brew,hanxue/linuxbrew,staticfloat/brew,pseudocody/brew,staticfloat/brew,gordonmcshane/homebrew,JCount/brew,Linuxbrew/brew,muellermartin/dist,nandub/brew,aw1621107/brew,vitorgalvao/brew,zmwangx/brew,rwhogg/brew,aw1621107/brew,AnastasiaSulyagina/brew,konqui/brew,amar-laksh/brew_sudo,AnastasiaSulyagina/brew,tonyg/homebrew,Homebrew/brew,vitorgalvao/brew,ilovezfs/brew,reitermarkus/brew,Homebrew/brew,zmwangx/brew,gregory-nisbet/brew,mahori/brew,amar-laksh/brew_sudo,claui/brew,reitermarkus/brew,rwhogg/brew,DomT4/brew,MikeMcQuaid/brew,konqui/brew,claui/brew,pseudocody/brew,gregory-nisbet/brew,sjackman/homebrew,amar-laksh/brew_sudo,MikeMcQuaid/brew,jmsundar/brew,nandub/brew,JCount/brew,AnastasiaSulyagina/brew,aw1621107/brew,tonyg/homebrew,konqui/brew,vitorgalvao/brew,staticfloat/brew