Make test.cmd execute scripts\test.ps1

test.cmd

@@ -1,8 +1,2 @@
-@rem Tests currently only work on `Release` build.
-@if "%config%" == "" set config=Release
-
-call "%ProgramFiles(x86)%\Microsoft Visual Studio 14.0\Common7\Tools\VsDevCmd.bat"
-
-msbuild GitHubVS.sln /p:Configuration=%Config%
-VSTest.Console.exe src\UnitTests\bin\%Config%\UnitTests.dll /TestAdapterPath:"."
-VSTest.Console.exe src\TrackingCollectionTests\bin\%Config%\TrackingCollectionTests.dll /TestAdapterPath:"."
+@if "%1" == "" echo Please specify Debug or Release && EXIT /B
+powershell -ExecutionPolicy Unrestricted scripts\test.ps1 -Config:%1