always replace .NET 3.5 of json.net with 4.0 on build.

build.ps1

@@ -26,6 +26,8 @@ Function Build()
     CheckExitCode
 
     CleanFolder $outputFolder
+
+    AddJsonNet
 }
 
 Function CleanFolder($path)
@@ -35,6 +37,8 @@ Function CleanFolder($path)
 
     get-childitem $path -File -Filter *.transform -Recurse  | foreach ($_) {remove-item $_.fullname}
 
+    get-childitem $path -File -Filter Newtonsoft.Json.* -Recurse  | foreach ($_) {remove-item $_.fullname}
+
     Write-Host Removing FluentValidation.Resources  files
     get-childitem $path -File -Filter FluentValidation.resources.dll -recurse | foreach ($_) {remove-item $_.fullname}
 
@@ -47,6 +51,12 @@ Function CleanFolder($path)
     }
 }
 
+
+Function AddJsonNet()
+{
+    Copy-Item .\packages\Newtonsoft.Json.5.*\lib\net35\*.*  -Destination $outputFolder -Verbose
+}
+
 Function PackageTests()
 {
     Write-Host Packaging Tests