Update WindowsBuild.md
Update WindowsBuild.md

Added note on which edition of Visual Studio to get.
xwu/swift,ahoppen/swift,ahoppen/swift,stephentyrone/swift,nathawes/swift,benlangmuir/swift,nathawes/swift,allevato/swift,CodaFi/swift,tkremenek/swift,JGiola/swift,roambotics/swift,jmgc/swift,apple/swift,rudkx/swift,airspeedswift/swift,JGiola/swift,parkera/swift,roambotics/swift,allevato/swift,nathawes/swift,hooman/swift,CodaFi/swift,tkremenek/swift,hooman/swift,CodaFi/swift,rudkx/swift,tkremenek/swift,airspeedswift/swift,hooman/swift,atrick/swift,parkera/swift,CodaFi/swift,glessard/swift,xwu/swift,nathawes/swift,rudkx/swift,xwu/swift,hooman/swift,benlangmuir/swift,gregomni/swift,roambotics/swift,jckarter/swift,glessard/swift,CodaFi/swift,atrick/swift,tkremenek/swift,gregomni/swift,atrick/swift,jmgc/swift,benlangmuir/swift,jmgc/swift,rudkx/swift,tkremenek/swift,roambotics/swift,tkremenek/swift,benlangmuir/swift,nathawes/swift,glessard/swift,tkremenek/swift,apple/swift,gregomni/swift,parkera/swift,apple/swift,allevato/swift,JGiola/swift,xwu/swift,parkera/swift,stephentyrone/swift,airspeedswift/swift,allevato/swift,ahoppen/swift,parkera/swift,atrick/swift,xwu/swift,glessard/swift,jckarter/swift,jmgc/swift,stephentyrone/swift,hooman/swift,airspeedswift/swift,gregomni/swift,apple/swift,jckarter/swift,nathawes/swift,roambotics/swift,benlangmuir/swift,airspeedswift/swift,ahoppen/swift,ahoppen/swift,hooman/swift,jckarter/swift,rudkx/swift,nathawes/swift,allevato/swift,stephentyrone/swift,benlangmuir/swift,allevato/swift,airspeedswift/swift,gregomni/swift,jckarter/swift,allevato/swift,xwu/swift,glessard/swift,stephentyrone/swift,ahoppen/swift,JGiola/swift,jckarter/swift,atrick/swift,atrick/swift,jmgc/swift,jmgc/swift,stephentyrone/swift,glessard/swift,jmgc/swift,gregomni/swift,xwu/swift,JGiola/swift,hooman/swift,rudkx/swift,roambotics/swift,parkera/swift,parkera/swift,CodaFi/swift,stephentyrone/swift,airspeedswift/swift,jckarter/swift,JGiola/swift,CodaFi/swift,apple/swift,parkera/swift,apple/swift