update react router and history versions
update react router and history versions

hartmamt/builder-talk,hartmamt/builder-talk,survivejs/react-for-awesome-people,luisrudge/microservices-com-service-fabric,lowsky/spectacle,waywaaard/spectacle,waywaaard/spectacle,rektide/webpush-away-deck,FormidableLabs/spectacle,rektide/webpush-away-deck,luisrudge/microservices-com-service-fabric,survivejs/react-for-awesome-people,tikotzky/spectacle,linclark/jsconf-last-call,lowsky/spectacle,oliviertassinari/SplitMeBord,oliviertassinari/SplitMeBord,tikotzky/spectacle,FormidableLabs/spectacle