Removing test programs, adding simple package script

csharp/nuget/NuGetPackageBuilder.ps1

@@ -0,0 +1,10 @@
+$solutionRoot = Resolve-Path ..\
+
+# Delete any existing output.
+Remove-Item *.nupkg
+
+# Create new packages for any nuspec files that exist in this directory.
+Foreach ($nuspec in $(Get-Item *.nuspec))
+{
+	.\Tools\NuGet.exe pack "$nuspec"
+}