Add information on building and running unit tests
Add information on building and running unit tests

swiftix/swift,tinysun212/swift-windows,stephentyrone/swift,danielmartin/swift,kperryua/swift,airspeedswift/swift,arvedviehweger/swift,jopamer/swift,JGiola/swift,Jnosh/swift,gribozavr/swift,allevato/swift,xedin/swift,uasys/swift,shajrawi/swift,tardieu/swift,allevato/swift,deyton/swift,amraboelela/swift,danielmartin/swift,tjw/swift,aschwaighofer/swift,manavgabhawala/swift,benlangmuir/swift,OscarSwanros/swift,lorentey/swift,gribozavr/swift,manavgabhawala/swift,calebd/swift,codestergit/swift,kstaring/swift,zisko/swift,kperryua/swift,stephentyrone/swift,glessard/swift,airspeedswift/swift,gmilos/swift,JaSpa/swift,allevato/swift,shajrawi/swift,calebd/swift,sschiau/swift,nathawes/swift,alblue/swift,gottesmm/swift,JaSpa/swift,modocache/swift,tinysun212/swift-windows,atrick/swift,therealbnut/swift,devincoughlin/swift,stephentyrone/swift,devincoughlin/swift,natecook1000/swift,aschwaighofer/swift,calebd/swift,deyton/swift,gottesmm/swift,Jnosh/swift,uasys/swift,jckarter/swift,atrick/swift,hughbe/swift,lorentey/swift,xwu/swift,glessard/swift,gregomni/swift,devincoughlin/swift,gottesmm/swift,harlanhaskins/swift,uasys/swift,ben-ng/swift,practicalswift/swift,austinzheng/swift,tinysun212/swift-windows,practicalswift/swift,frootloops/swift,hooman/swift,bitjammer/swift,JaSpa/swift,CodaFi/swift,bitjammer/swift,gottesmm/swift,shahmishal/swift,xedin/swift,deyton/swift,JGiola/swift,modocache/swift,natecook1000/swift,return/swift,uasys/swift,jmgc/swift,kstaring/swift,JaSpa/swift,hooman/swift,tjw/swift,jopamer/swift,sschiau/swift,huonw/swift,OscarSwanros/swift,jtbandes/swift,swiftix/swift,gmilos/swift,tinysun212/swift-windows,benlangmuir/swift,harlanhaskins/swift,apple/swift,gribozavr/swift,return/swift,arvedviehweger/swift,austinzheng/swift,return/swift,CodaFi/swift,arvedviehweger/swift,lorentey/swift,uasys/swift,jtbandes/swift,JaSpa/swift,stephentyrone/swift,xwu/swift,therealbnut/swift,stephentyrone/swift,Jnosh/swift,tkremenek/swift,jmgc/swift,devincoughlin/swift,karwa/swift,tardieu/swift,gribozavr/swift,tardieu/swift,rudkx/swift,austinzheng/swift,tardieu/swift,return/swift,therealbnut/swift,alblue/swift,shajrawi/swift,atrick/swift,kstaring/swift,harlanhaskins/swift,tardieu/swift,arvedviehweger/swift,arvedviehweger/swift,xedin/swift,JGiola/swift,CodaFi/swift,nathawes/swift,harlanhaskins/swift,karwa/swift,jckarter/swift,stephentyrone/swift,aschwaighofer/swift,devincoughlin/swift,tardieu/swift,swiftix/swift,harlanhaskins/swift,djwbrown/swift,ben-ng/swift,aschwaighofer/swift,codestergit/swift,jckarter/swift,felix91gr/swift,parkera/swift,xwu/swift,sschiau/swift,ben-ng/swift,ben-ng/swift,tkremenek/swift,shajrawi/swift,benlangmuir/swift,tinysun212/swift-windows,jtbandes/swift,xwu/swift,shahmishal/swift,jckarter/swift,arvedviehweger/swift,airspeedswift/swift,roambotics/swift,xwu/swift,danielmartin/swift,austinzheng/swift,zisko/swift,codestergit/swift,amraboelela/swift,bitjammer/swift,modocache/swift,ahoppen/swift,manavgabhawala/swift,huonw/swift,airspeedswift/swift,manavgabhawala/swift,Jnosh/swift,karwa/swift,OscarSwanros/swift,jtbandes/swift,OscarSwanros/swift,gmilos/swift,swiftix/swift,gmilos/swift,parkera/swift,rudkx/swift,swiftix/swift,frootloops/swift,frootloops/swift,hughbe/swift,frootloops/swift,apple/swift,alblue/swift,therealbnut/swift,alblue/swift,milseman/swift,kperryua/swift,lorentey/swift,therealbnut/swift,bitjammer/swift,frootloops/swift,jckarter/swift,devincoughlin/swift,kperryua/swift,bitjammer/swift,danielmartin/swift,practicalswift/swift,zisko/swift,tjw/swift,ahoppen/swift,hooman/swift,brentdax/swift,amraboelela/swift,airspeedswift/swift,brentdax/swift,aschwaighofer/swift,tkremenek/swift,jtbandes/swift,gmilos/swift,amraboelela/swift,parkera/swift,shahmishal/swift,manavgabhawala/swift,roambotics/swift,codestergit/swift,jopamer/swift,tkremenek/swift,kperryua/swift,felix91gr/swift,shahmishal/swift,JGiola/swift,JaSpa/swift,Jnosh/swift,codestergit/swift,rudkx/swift,nathawes/swift,lorentey/swift,jopamer/swift,huonw/swift,jmgc/swift,codestergit/swift,lorentey/swift,jmgc/swift,huonw/swift,return/swift,Jnosh/swift,harlanhaskins/swift,jopamer/swift,zisko/swift,nathawes/swift,tjw/swift,practicalswift/swift,milseman/swift,gmilos/swift,felix91gr/swift,hughbe/swift,amraboelela/swift,jmgc/swift,gottesmm/swift,airspeedswift/swift,uasys/swift,tardieu/swift,apple/swift,harlanhaskins/swift,CodaFi/swift,tkremenek/swift,rudkx/swift,brentdax/swift,allevato/swift,alblue/swift,rudkx/swift,gmilos/swift,austinzheng/swift,therealbnut/swift,roambotics/swift,Jnosh/swift,modocache/swift,shajrawi/swift,jtbandes/swift,shahmishal/swift,practicalswift/swift,aschwaighofer/swift,djwbrown/swift,JGiola/swift,CodaFi/swift,brentdax/swift,deyton/swift,kstaring/swift,modocache/swift,ahoppen/swift,hughbe/swift,CodaFi/swift,felix91gr/swift,therealbnut/swift,gribozavr/swift,danielmartin/swift,zisko/swift,shajrawi/swift,glessard/swift,kperryua/swift,alblue/swift,allevato/swift,austinzheng/swift,xedin/swift,return/swift,parkera/swift,atrick/swift,tkremenek/swift,jmg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