Follow up #49: Update README with the correct version of rustc
Follow up #49: Update README with the correct version of rustc

mcav/foxbox,gabrielesvelto/foxbox,mcav/foxbox,gabrielesvelto/foxbox,julienw/foxbox,npark-mozilla/foxbox,fxbox/foxbox,npark-mozilla/foxbox,Yoric/foxbox,mcav/foxbox,cr/foxbox,Yoric/foxbox,fxbox/foxbox,fabricedesre/foxbox,cr/foxbox,fxbox/foxbox,fabricedesre/foxbox,aosmond/foxbox,fabricedesre/foxbox,fxbox/foxbox,gabrielesvelto/foxbox,julienw/foxbox,hkoka/foxbox,mcav/foxbox,aosmond/foxbox,aosmond/foxbox,npark-mozilla/foxbox,Yoric/foxbox,hkoka/foxbox,hkoka/foxbox,npark-mozilla/foxbox,Yoric/foxbox,fabricedesre/foxbox,hkoka/foxbox,cr/foxbox,julienw/foxbox,cr/foxbox