public static DirectoryInfo CreatePackage(
string name,
params string[] targetFrameworks)
{
var pkgRoot = CreateEmptyFolder(name);
var lib = pkgRoot.CreateSubdirectory("lib");
foreach (var targetName in targetFrameworks)
CreateTargetFrameworkSpecific(name, targetName, lib);
CreateFile(name + ".nupkg", pkgRoot);
return pkgRoot;
}