Update README for configuring non-building Xcode projects
Update README for configuring non-building Xcode projects

The README mentioned a flag that no longer exists. You still need
to build llvm-config in order to configure a non-building Xcode
project, so that flag was removed some time ago.

Jnosh/swift,karwa/swift,Ivacker/swift,cbrentharris/swift,xedin/swift,gottesmm/swift,kperryua/swift,huonw/swift,devincoughlin/swift,ben-ng/swift,jckarter/swift,arvedviehweger/swift,harlanhaskins/swift,shajrawi/swift,shajrawi/swift,danielmartin/swift,hughbe/swift,nathawes/swift,tinysun212/swift-windows,aschwaighofer/swift,ahoppen/swift,lorentey/swift,alblue/swift,glessard/swift,atrick/swift,gottesmm/swift,austinzheng/swift,kperryua/swift,hughbe/swift,jopamer/swift,swiftix/swift.old,kentya6/swift,natecook1000/swift,JaSpa/swift,slavapestov/swift,roambotics/swift,KrishMunot/swift,airspeedswift/swift,therealbnut/swift,benlangmuir/swift,rudkx/swift,SwiftAndroid/swift,aschwaighofer/swift,emilstahl/swift,huonw/swift,uasys/swift,slavapestov/swift,swiftix/swift.old,tinysun212/swift-windows,zisko/swift,kentya6/swift,gottesmm/swift,dduan/swift,gregomni/swift,devincoughlin/swift,nathawes/swift,sschiau/swift,gregomni/swift,kusl/swift,danielmartin/swift,kentya6/swift,atrick/swift,aschwaighofer/swift,xedin/swift,therealbnut/swift,practicalswift/swift,codestergit/swift,sschiau/swift,mightydeveloper/swift,felix91gr/swift,manavgabhawala/swift,practicalswift/swift,xedin/swift,JGiola/swift,tjw/swift,kstaring/swift,kentya6/swift,swiftix/swift.old,brentdax/swift,swiftix/swift.old,milseman/swift,ben-ng/swift,johnno1962d/swift,russbishop/swift,KrishMunot/swift,KrishMunot/swift,ken0nek/swift,harlanhaskins/swift,harlanhaskins/swift,Ivacker/swift,devincoughlin/swift,djwbrown/swift,kentya6/swift,xwu/swift,danielmartin/swift,stephentyrone/swift,Ivacker/swift,SwiftAndroid/swift,russbishop/swift,tkremenek/swift,tjw/swift,benlangmuir/swift,LeoShimonaka/swift,austinzheng/swift,austinzheng/swift,xwu/swift,allevato/swift,natecook1000/swift,dduan/swift,frootloops/swift,johnno1962d/swift,lorentey/swift,tinysun212/swift-windows,xwu/swift,modocache/swift,gmilos/swift,hughbe/swift,calebd/swift,djwbrown/swift,kperryua/swift,huonw/swift,shahmishal/swift,apple/swift,lorentey/swift,aschwaighofer/swift,benlangmuir/swift,johnno1962d/swift,gribozavr/swift,OscarSwanros/swift,CodaFi/swift,danielmartin/swift,swiftix/swift,kusl/swift,tkremenek/swift,LeoShimonaka/swift,SwiftAndroid/swift,uasys/swift,kentya6/swift,brentdax/swift,tardieu/swift,gottesmm/swift,kusl/swift,amraboelela/swift,stephentyrone/swift,ben-ng/swift,adrfer/swift,swiftix/swift.old,benlangmuir/swift,KrishMunot/swift,jckarter/swift,hooman/swift,harlanhaskins/swift,kperryua/swift,uasys/swift,deyton/swift,frootloops/swift,tkremenek/swift,sdulal/swift,codestergit/swift,adrfer/swift,gmilos/swift,LeoShimonaka/swift,parkera/swift,SwiftAndroid/swift,allevato/swift,felix91gr/swift,amraboelela/swift,johnno1962d/swift,swiftix/swift.old,atrick/swift,russbishop/swift,jopamer/swift,swiftix/swift.old,sdulal/swift,hooman/swift,roambotics/swift,JaSpa/swift,CodaFi/swift,kentya6/swift,shajrawi/swift,alblue/swift,milseman/swift,lorentey/swift,JGiola/swift,aschwaighofer/swift,gmilos/swift,natecook1000/swift,jtbandes/swift,stephentyrone/swift,cbrentharris/swift,slavapestov/swift,russbishop/swift,zisko/swift,deyton/swift,IngmarStein/swift,LeoShimonaka/swift,amraboelela/swift,modocache/swift,stephentyrone/swift,jtbandes/swift,slavapestov/swift,hughbe/swift,nathawes/swift,devincoughlin/swift,cbrentharris/swift,shahmishal/swift,CodaFi/swift,calebd/swift,cbrentharris/swift,JaSpa/swift,xedin/swift,tardieu/swift,mightydeveloper/swift,austinzheng/swift,jckarter/swift,swiftix/swift,KrishMunot/swift,therealbnut/swift,russbishop/swift,frootloops/swift,OscarSwanros/swift,lorentey/swift,amraboelela/swift,khizkhiz/swift,emilstahl/swift,gribozavr/swift,karwa/swift,gregomni/swift,hooman/swift,xedin/swift,MukeshKumarS/Swift,Jnosh/swift,tardieu/swift,tinysun212/swift-windows,return/swift,hooman/swift,stephentyrone/swift,dduan/swift,Ivacker/swift,parkera/swift,sschiau/swift,johnno1962d/swift,tjw/swift,jckarter/swift,slavapestov/swift,kstaring/swift,ben-ng/swift,MukeshKumarS/Swift,bitjammer/swift,CodaFi/swift,parkera/swift,nathawes/swift,russbishop/swift,gribozavr/swift,johnno1962d/swift,sschiau/swift,ahoppen/swift,allevato/swift,tardieu/swift,manavgabhawala/swift,karwa/swift,dduan/swift,xwu/swift,gribozavr/swift,Ivacker/swift,gmilos/swift,JaSpa/swift,arvedviehweger/swift,MukeshKumarS/Swift,IngmarStein/swift,natecook1000/swift,practicalswift/swift,return/swift,manavgabhawala/swift,danielmartin/swift,calebd/swift,amraboelela/swift,tkremenek/swift,nathawes/swift,kperryua/swift,swiftix/swift.old,parkera/swift,austinzheng/swift,gribozavr/swift,emilstahl/swift,modocache/swift,MukeshKumarS/Swift,ken0nek/swift,return/swift,allevato/swift,frootloops/swift,shajrawi/swift,karwa/swift,khizkhiz/swift,gribozavr/swift,sschiau/swift,hooman/swift,gmilos/swift,ben-ng/swift,manavgabhawala/swift,djwbrown/swift,return/swift,dduan/swift,xwu/swift,devincoughlin/swift,amraboelela/swift,modocache/swift,LeoShimonaka/swift,codestergit/swift,OscarSwanros/swift,sdulal/swift,jopamer/swift,harlanhaskins/swift,jopamer/swift,shahmishal/swift,mightydeveloper/swift,apple/swift,swiftix/swift,return/swift,zisko/swift,therealbnut/swift,zisko/swift,jmgc/swift,tkremenek/swift,calebd/swift,sdulal/swift,therealbnut/swift,devincoughlin/swift,xwu/swift,ben-ng/swift,return/swift,shahmishal/swift,gottesmm/swift,djwbrown/swift,dduan/swift,sdulal/swift,russbishop/swift,khizkhiz/swift,milseman/swift,glessard/swift,lorentey/swift,practicalswift/swift,austinzheng/swift,frootloops/swift,swiftix/swift,codestergit/swift,airspeedswift/swift,bitjammer/swift,felix91gr/swift,arvedviehweger/swift,xedin/swift,khizkhiz/swift,practicalswift/swift,dreamsxin/swift,kstaring/swift,practicalswift/swift,therealbnut/swift,jmgc/swift,alblue/swift,arvedviehweger/swift,bitjammer/swift,ahoppen/swift,airspeedswift/swift,khizkhiz/swift,practicalswift/swift,deyton/swift,stephentyrone/swift,allevato/swift,calebd/swift,LeoShimonaka/swift,kusl/swift,adrfer/swift,airspeedswift/swift,hughbe/swift,atrick/swift,uasys/swift,brentdax/swift,codestergit/swift,jopamer/swift,karwa/swift,jmgc/swift,brentdax/swift,airspeedswift/swift,benlangmuir/swift,modocache/swift,OscarSwanros/swift,jtbandes/swift,Ivacker/swift,Ivacker/swift,tinysun212/swift-windows,alblue/swift,lorentey/swift,frootloops/swift,JGiola/swift,Jnosh/swift,SwiftAndroid/swift,hooman/swift,gottesmm/swift,cbrentharris/swift,adrfer/swift,natecook1000/swift,IngmarStein/swift,austinzheng/swift,KrishMunot/swift,mightydeveloper/swift,emilstahl/swift,huonw/swift,CodaFi/swift,uasys/swift,kperryua/swift,jtbandes/swift,felix91gr/swift,kusl/swift,parkera/swift,atrick/swift,IngmarStein/swift,brentdax/swift,deyton/swift,huonw/swift,gregomni/swift,milseman/swift,alblue/swift,adrfer/swift,jmgc/swift,modocache/swift,JaSpa/swift,atrick/swift,codestergit/swift,mightydeveloper/swift,apple/swift,felix91gr/swift,arvedviehweger/swift,tkremenek/swift,sdulal/swift,nathawes/swift,Ivacker/swift,jmgc/swift,tinysun212/swift-windows,kusl/swift,natecook1000/swift,mightydeveloper/swift,glessard/swift,harlanhaskins/swift,alblue/swift,rudkx/swift,shajrawi/swift,benlangmuir/swift,brentdax/swift,Jnosh/swift,kusl/swift,shahmishal/swift,practicalswift/swift,arvedviehweger/swift,jckarter/swift,gribozavr/swift,gmilos/swift,tardieu/swift,zisko/swift,rudkx/swift,huonw/swift,felix91gr/swift,karwa/swift,tjw/swift,johnno1962d/swift,arvedviehweger/swift,ben-ng/swift,djwbrown/swift,shahmishal/swift,parkera/swift,deyton/swift,shajrawi/swift,glessard/swift,CodaFi/swift,kstaring/swift,ahoppen/swift,sschiau/swift,hughbe/swift,sdulal/swift,apple/swift,frootloops/swift,khizkhiz/swift,swiftix/swift,kperryua/swift,xedin/swift,zisko/swift,gregomni/swift,modocache/swift,adrfer/swift,milseman/swift,tjw/swift,slavapestov/swift,bitjammer/swift,sschiau/swift,parkera/swift,deyton/swift,sschiau/swift,shahmishal/swift,felix91gr/swift,milseman/swift,dreamsxin/swift,khizkhiz/swift,gregomni/swift,OscarSwanros/swift,jckarter/swift,IngmarStein/swift,tardieu/swift,gmilos/swift,airspeedswift/swift,emilstahl/swift,MukeshKumarS/Swift,rudkx/swift,jopamer/swift,jmgc/swift,manavgabhawala/swift,swiftix/swift,karwa/swift,IngmarStein/swift,dduan/swift,karwa/swift,jtbandes/swift,OscarSwanros/swift,ken0nek/swift,LeoShimonaka/swift,aschwaighofer/swift,manavgabhawala/swift,brentdax/swift,SwiftAndroid/swift,uasys/swift,danielmartin/swift,apple/swift,rudkx/swift,roambotics/swift,gribozavr/swift,apple/swift,swiftix/swift,KrishMunot/swift,JaSpa/swift,deyton/swift,emilstahl/swift,milseman/swift,mightydeveloper/swift,OscarSwanros/swift,djwbrown/swift,tkremenek/swift,ken0nek/swift,manavgabhawala/swift,lorentey/swift,calebd/swift,jtbandes/swift,djwbrown/swift,shahmishal/swift,codestergit/swift,calebd/swift,JGiola/swift,adrfer/swift,JGiola/swift,glessard/swift,therealbnut/swift,huonw/swift,aschwaighofer/swift,kusl/swift,roambotics/swift,LeoShimonaka/swift,amraboelela/swift,roambotics/swift,zisko/swift,ken0nek/swift,ken0nek/swift,kstaring/swift,natecook1000/swift,Jnosh/swift,IngmarStein/swift,airspeedswift/swift,hooman/swift,xedin/swift,glessard/swift,gottesmm/swift,parkera/swift,roambotics/swift,jmgc/swift,return/swift,allevato/swift,bitjammer/swift,allevato/swift,cbrentharris/swift,kstaring/swift,jtbandes/swift,danielmartin/swift,mightydeveloper/swift,jckarter/swift,JaSpa/swift,jopamer/swift,xwu/swift,shajrawi/swift,ahoppen/swift,ahoppen/swift,ken0nek/swift,harlanhaskins/swift,devincoughlin/swift,alblue/swift,bitjammer/swift,bitjammer/swift,cbrentharris/swift,tjw/swift,tardieu/swift,cbrentharris/swift,emilstahl/swift,sdulal/swift,devincoughlin/swift,uasys/swift,Jnosh/swift,JGiola/swift,Jnosh/swift,shajrawi/swift,rudkx/swift,kentya6/swift,MukeshKumarS/Swift,hughbe/swift,stephentyrone/swift,slavapestov/swift,tinysun212/swift-windows,emilstahl/swift,tjw/swift,SwiftAndroid/swift,nathawes/swift,CodaFi/swift,kstaring/swift,MukeshKumarS/Swift