build - pass required param to Nuget pack

Author: amaitland

build.ps1

@@ -505,7 +505,7 @@ try
 		. $Nuget pack nuget\chromiumembeddedframework.runtime.win.nuspec -NoPackageAnalysis -Version $CefPackageVersion -Properties 'Configuration=Release;Platform=x64;CPlatform=windows64;' -OutputDirectory nuget
 
 		# Meta Package
-		. $Nuget pack nuget\chromiumembeddedframework.runtime.nuspec -NoPackageAnalysis -Version $CefPackageVersion -OutputDirectory nuget
+		. $Nuget pack nuget\chromiumembeddedframework.runtime.nuspec -NoPackageAnalysis -Version $CefPackageVersion -Properties 'Configuration=Release;' -OutputDirectory nuget
 
 		# Build sdk
 		$Filename = Resolve-Path ".\nuget\cef.sdk.props"