Add support for .Net Core (#25)

Author: alexvaluyskiy

build.cmd

@@ -1,19 +1 @@
-@echo off
-
-pushd %~dp0
-
-src\.nuget\NuGet.exe update -self
-
-src\.nuget\NuGet.exe install FAKE -ConfigFile src\.nuget\Nuget.Config -OutputDirectory src\packages -ExcludeVersion -Version 4.16.1
-
-src\.nuget\NuGet.exe install NUnit.ConsoleRunner -ConfigFile src\.nuget\Nuget.Config -OutputDirectory src\packages\FAKE -ExcludeVersion -Version 3.2.1
-
-if not exist src\packages\SourceLink.Fake\tools\SourceLink.fsx (
-  src\.nuget\nuget.exe install SourceLink.Fake -ConfigFile src\.nuget\Nuget.Config -OutputDirectory src\packages -ExcludeVersion
-)
-rem cls
-
-set encoding=utf-8
-src\packages\FAKE\tools\FAKE.exe build.fsx %*
-
-popd
+PowerShell.exe -file "build.ps1" %*